9 postsGo to First Unread Post
Print view
SORT BY:
Date
Kudos
Tagger
Intern
Joined: 01 Apr 2013
Posts: 15
Which of the following fractions is at least twice greater than 11/50?[#permalink]04 Apr 2013, 17:09
4
Kudos
23
Bookmarks
';$(this).html(tpl);});};}function store_answer( answer ){var timer_duration = 0;//timer_offset = 0;if(timer_stop_time !== null && timer_start_time !== null){timer_duration = Math.floor( ( timer_stop_time.getTime() - timer_start_time.getTime() ) / 1000);}var url = "/forum/timer.php?topic_id=150416&user_id=1&timer_duration=" + timer_duration + "&timer_answer=" + answer + "&r=" + Math.random() + "&sid=0b670bb83a83bf8adb120aafd453c4aa";sendAjax( "GET", url, callbackStoreAnswer );}var timer_offset = 0;function timer_click(){if ( timer_id == 0 ){//document.getElementById('timer_button').src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/timer_stop.png";document.getElementById('timer_button').src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/timer_pause_btn.png";document.getElementById('timer_message').innerHTML = "";var i = 0;$('.statisticWrap').each(function() {var sumbol = '', value = 0;switch(i){case 0:{sumbol = 'a';value = 11;}break;case 1:{sumbol = 'b';value = 12;}break;case 2:{sumbol = 'c';value = 13;}break;case 3:{sumbol = 'd';value = 14;}break;case 4:{sumbol = 'e';value = 15;}break;}$(this).removeClass('correctAnswer');var tpl = '
'+sumbol.toUpperCase()+'
';$(this).html(tpl);i++;});timer_start_time = new Date();timer_start_time.setTime(timer_start_time.getTime() - timer_offset);document.getElementById('timer_display').classList.add('playing');if(timer_offset > 0)timer_loop();elsedocument.getElementById('timer_display').innerHTML = "00:00";timer_id = setInterval( timer_loop, 200 );selected_answer = null;//document.getElementById('timer_button').style.visibility = 'hidden';//document.getElementById('timer_abcde_block').style.display = 'none';}else{timer_stop_time = new Date();timer_offset = timer_stop_time.getTime() - timer_start_time.getTime();clearInterval( timer_id );timer_id = 0;document.getElementById('timer_button').src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/timer_play_btn.png";document.getElementById('timer_display').classList.remove('playing');if(selected_answer !== null)store_answer(0);}}function blink_right_answer(){var element = document.getElementById( 'timer_answer_'+'Official Answer and Stats are available only to registered users.Register/Login.'.toLowerCase() );if ( element != null ){if( element.style.visibility == "hidden" ){element.style.visibility = "visible";} else {element.style.visibility = "hidden";}}}function timer_loop(){var current_time = new Date();var timer_elapsed = 0;var timer_minutes = 0;var timer_seconds = 0;timer_elapsed = current_time.getTime() - timer_start_time.getTime();timer_elapsed = Math.floor(timer_elapsed / 1000);timer_minutes = Math.floor(timer_elapsed / 60);timer_seconds = timer_elapsed - timer_minutes * 60;if( timer_minutes < 10 ){timer_minutes= "0" + timer_minutes;}if( timer_seconds < 10 ){timer_seconds = "0" + timer_seconds;}document.getElementById('timer_display').innerHTML = timer_minutes + ":" + timer_seconds;}function write_timer_message( message ){document.getElementById( 'timer_message' ).innerHTML = message;}/*** !!!*/function write_timer_difficulty( percentile ){// console.log( 'write_timer_difficulty - in_percentile = ' + percentile);if(percentile > 0){var tpl_status = '';if(percentile>0 && percentile<=29){tpl_status += '
';tpl_status += '
';tpl_status += '';}else if(percentile>=30 && percentile<=69){tpl_status += '';tpl_status += '';tpl_status += '';} else if(percentile>=70 && percentile<=99){tpl_status += '';tpl_status += '';tpl_status += '';}var tpl = '';tpl += '
Difficulty:
';tpl += '
';tpl += '';tpl += tpl_status;tpl += '';tpl += '';tpl += ''+getLabelPercentile(percentile)+' ('+getLabelPercentileStatus(percentile)+')';tpl += '
';document.getElementById( 'timer_difficulty' ).innerHTML = tpl;}}/*** !!!*/function getLabelPercentileStatus(in_percentile){var status = 'low';if(in_percentile >= 0 && in_percentile <= 29) {status = 'low';}else if(in_percentile >= 30 && in_percentile <= 69){status = 'medium';} else if(in_percentile >= 70 && in_percentile <= 99){status = 'hard';}return status;}function getLabelPercentile( in_percentile ){var percentile = '0%';if(in_percentile >= 0 && in_percentile <= 9){percentile = '5%';} else if(in_percentile >= 10 && in_percentile <= 19){percentile = '15%';}else if(in_percentile >= 20 && in_percentile <= 29){percentile = '25%';}else if( in_percentile >= 30 && in_percentile <= 39){percentile = '35%';}else if( in_percentile >= 40 && in_percentile <= 49){percentile = '45%';}else if(in_percentile >= 50 && in_percentile <= 59){percentile = '55%';}else if(in_percentile >= 60 && in_percentile <= 69){percentile = '65%';}else if(in_percentile >= 70 && in_percentile <= 79){percentile = '75%';}else if(in_percentile >= 80 && in_percentile <= 89){percentile = '85%';}else if(in_percentile >= 90 && in_percentile <= 99){percentile = '95%';}return percentile;}function enable_timer_answer_group(){if ( show_answer_id != 0 ){clearInterval( show_answer_id );show_answer_id = 0;}var element = document.getElementById( 'timer_answer_' + 'Official Answer and Stats are available only to registered users.Register/Login.'.toLowerCase() );if ( element != null ){element.style.visibility = "visible";}//document.getElementById('timer_button').style.visibility = 'visible';//document.getElementById('timer_abcde_block').style.display = 'block';if( document.getElementById( 'timer_answer_1' ) ){document.getElementById( 'timer_answer_1' ).disabled = false;}if( document.getElementById( 'timer_answer_2' ) ){document.getElementById( 'timer_answer_2' ).disabled = false;}if( document.getElementById( 'timer_answer_3')){document.getElementById( 'timer_answer_3').disabled = false;}if ( document.getElementById( 'timer_answer_a' ) ){document.getElementById( 'timer_answer_a' ).src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/buttons/a_white.png";document.getElementById( 'timer_answer_a' ).onclick = function() { timer_answer( 11 ) };}if ( document.getElementById( 'timer_answer_b' ) ){document.getElementById( 'timer_answer_b' ).src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/buttons/b_white.png";document.getElementById( 'timer_answer_b' ).onclick = function() { timer_answer( 12 ) };}if ( document.getElementById( 'timer_answer_c' ) ){document.getElementById( 'timer_answer_c' ).src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/buttons/c_white.png";document.getElementById( 'timer_answer_c' ).onclick = function() { timer_answer( 13 ) };}if ( document.getElementById( 'timer_answer_d' ) ){document.getElementById( 'timer_answer_d' ).src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/buttons/d_white.png";document.getElementById( 'timer_answer_d' ).onclick = function() { timer_answer( 14 ) };}if ( document.getElementById( 'timer_answer_e' ) ){document.getElementById( 'timer_answer_e' ).src="https://cdn.gmatclub.com/cdn/files/forum/styles/gmatclub_light/theme/images/viewtopic/buttons/e_white.png";document.getElementById( 'timer_answer_e' ).onclick = function() { timer_answer( 15 ) };}}/* Timer Mod End-------------- */
Show timer
00:00
A
B
C
D
E
Difficulty:
35%(medium)
Question Stats:
70%(01:31)correct
30%(01:30) wrongbased on653sessions
HideShowDIFFICULTY AND TIMER STATISTICS
Which of the following fractions is at least twice greater than 11/50?
A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20
ShowHide Answer
Official Answer and Stats are available only to registered users.Register/Login.
Most Helpful Reply
nt2010
Manager
Joined: 15 Jan 2013
Status:Looking to improve
Posts: 111
GMAT 1: 530 Q43 V20
GMAT 2: 560 Q42 V25
GMAT 3: 650 Q48 V31
Which of the following fractions is at least twice greater than 11/50?[#permalink]04 Apr 2013, 18:04
16
Kudos
2
Bookmarks
Which of the following fractions is at least twice greater than 11/50?
The fastest way to solve this problem is to use POE and approx by making the denominator same
A) 2/ 5 = 20/50 numerator is less than 22 so out.
B) 11/34 = 550 / 170 numerator is less than 746 so out.
C) 43 / 99 = approx. 43 / 100 numerator is much less than 80 so out.
D. 8/21 = approx. 40 / 100 close to C so out..
E. 9/20 = 45 / 100 numerator is more than twice 22 so Answer is E
mau5
Verbal Forum Moderator
Joined: 10 Oct 2012
Posts: 485
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]04 Apr 2013, 21:47
6
Kudos
1
Bookmarks
Tagger wrote:
Which of the following fractions is at least twice greater than 11/50?
A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20
It looks very easy but what is the fastest way to solve it ?
11/50 -->0.22. Now, we want to look at a value which is atleast 0.44 or more.
A-->0.4
B-->11/34 == 11/33(As we decreased the denominator, the actual value will be a little less) than 0.33
C-->43/99== 44/99(the actual value will be a little less) than 0.44
D-->8/21==8/20(the actual value will be a little less) than 0.4
E-->9/20==8/20(the actual value will be a little more) =0.45
E.
_________________
All that is equal and not-Deep Dive In-equality
Hit and Trial for Integral Solutions
Signature Read More
General Discussion
g106
Manager
Joined: 21 Aug 2010
Posts: 130
Location: United States
GMAT 1: 700 Q49 V35
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]04 Apr 2013, 17:31
Tagger wrote:
Which of the following fractions is at least twice greater than 11/50?
A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20
It looks very easy but what is the fastest way to solve it ?
Answer E
11/50=0.22
9/20=0.45 which is 0.01 greater than two times of 0.22
_________________
-------------------------------------
Signature Read More
Tagger
Intern
Joined: 01 Apr 2013
Posts: 15
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]05 Apr 2013, 03:52
Thx fellows !
Logically the answer will be the highest number of the answerchoice.
Since we're not allowed to use calculators, nt2010 method is the fastest I think.
PareshGmat
SVP
Joined: 27 Dec 2012
Status:The Best Or Nothing
Posts: 1559
Location: India
Concentration: General Management, Technology
WE:Information Technology (Computer Software)
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]14 Jan 2015, 21:31
2
Kudos
Answer = E
Rationalise the denominator, \(\frac{9}{20} = \frac{45}{100}\) is the highest
JSS16
Intern
Joined: 23 Apr 2016
Posts: 6
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]27 Apr 2016, 06:26
You can also set them equal to each other, cross multiply, and compare:
A.) 2/5 = 11/50 --> 100 = 55 (more than half)
B.) 11/34 = 11/50 --> 550 = 374 (more than half)
C.) 43/99 = 11/50 --> 2,150 = 1,089 (more than half)
D.) 8/21 = 11/50 --> 400 = 231 (more than half)
E.) 9/20 = 11/50 --> 450 = 220 (less than half)
In problems like this it is fastest to skip the longer ones like B & C and jump to D & E
chetan2u
RC & DI Moderator
Joined: 02 Aug 2009
Status:Math and DI Expert
Posts: 11443
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]27 Apr 2016, 06:58
4
Kudos
2
Bookmarks
Expert Reply
Tagger wrote:
Which of the following fractions is at least twice greater than 11/50?
A. 2/5
B. 11/34
C. 43/99
D. 8/21
E. 9/20
It looks very easy but what is the fastest way to solve it ?
Hi,
I believe any choice given by GMAT invariably does not require too much of calculations BUT we should how to read the info provided by choices..
so first lets see the Q--
atleast twice greater than 11/50..
INFERENCE-
1) Only ONE choice will be > 2*11/50..
2) In a way we are also looking for the LARGEST number in choice
3) The above 2-point mean that we can eliminate choices by comparing with 22/50 and ALSO by comparing within each other..
lets see the choices-
A. 2/5 .. 2/5 = 4/20 < E. 9/20..... also 2/5=20/50 <22/50.. eliminate
B. 11/34 .. 11/34 = 22/68.. numerators are same but denominator>50 so <22/50.. eliminate
C. 43/99 .. 22/50 = 44/100... In the choice both numerator and denominator are less by one each so 43/99<44/100.. eliminate
D. 8/21 .. clearly 8/21<E.9/20.. eliminate
E. 9/20 .. Only one left 9/20 = 45/100 > 44/100.. ANSWER
E
_________________
1. Absolute modulus:. 2. Fractions: 3. Percentage increase: 4. Combinations:
Signature Read More
aksh*tagandhi
Intern
Joined: 06 Jun 2021
Posts: 4
Location: India
Concentration: Entrepreneurship, Technology
GPA: 3.21
WE:Other (Other)
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]15 Jun 2024, 03:03
nt2010 wrote:
The fastest way to solve this problem is to use POE and approx by making the denominator same
A) 2/ 5 = 20/50 numerator is less than 22 so out.
B) 11/34 = 550 / 170 numerator is less than 746 so out.
C) 43 / 99 = approx. 43 / 100 numerator is much less than 80 so out.
D. 8/21 = approx. 40 / 100 close to C so out..
E. 9/20 = 45 / 100 numerator is more than twice 22 so Answer is E
//Kudos please, if the above explanation is good.
Hi Bunuel - can you please explain the answer to option B on why we are getting 550 in the numerator when the fraction is being multiplied by 5 and where does 746 come in from?
Got the answer to the question but was trying to understand the faster method with less calculation
gmatclubot
Re: Which of the following fractions is at least twice greater than 11/50?[#permalink]
15 Jun 2024, 03:03
NEW TOPIC
POST REPLY
Downloads
My Bookmarks
Important topics
Reviews
Moderator:
