Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized for You
we will pick new questions that match your level based on your Timer History
Track Your Progress
every week, we’ll send you an estimated GMAT score based on your performance
Practice Pays
we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
It appears that you are browsing the GMAT Club forum unregistered!
Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club
Registration gives you:
Tests
Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.
Applicant Stats
View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more
Books/Downloads
Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
In last examination Roger scored marks in each of 5 subjects [#permalink]
04 Mar 2012, 06:34
3
This post received KUDOS
3
This post was BOOKMARKED
00:00
A
B
C
D
E
Difficulty:
45% (medium)
Question Stats:
71% (02:44) correct
29% (02:09) wrong based on 191 sessions
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
Re: Ratio question [#permalink]
04 Mar 2012, 07:07
4
This post received KUDOS
Expert's post
1
This post was BOOKMARKED
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
A. 1 B. 2 C. 3 D. 4 E. 5
Given: A:B:C:D:E=4x:5x:6x:7x:8x, for some multiple x. Assume the maximum marks of each subject to be y, so the the maximum marks of ALL 5 subjects will be 5y.
So, we have that \(4x+5x+6x+7x+8x=\frac{72}{100}*5y\) --> \(30x=\frac{72*5}{100}*y\) --> \(x=\frac{12}{100}*y\). \(4x=\frac{48}{100}*y\) and \(5x=\frac{60}{100}*y\), so in subject A Roger scored 48% (less than 50%) and in subject B 60% (more than 50%). Obviously in all other subjects Rogers scores will be higher than 50%.
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
05 Mar 2012, 10:41
Hi bunnel
can you suggest any material for ratio and proportions. I have completed ratio and proportions in manhattan word translations, but still i need some extra practice
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
05 Mar 2012, 10:59
Expert's post
1
This post was BOOKMARKED
TomB wrote:
Hi bunnel
can you suggest any material for ratio and proportions. I have completed ratio and proportions in manhattan word translations, but still i need some extra practice
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
20 Mar 2012, 20:37
3
This post received KUDOS
I did this by picking numbers. Say the max mark in each subject is 100. Then I can directly know that Roger scored 40,50,60,70,80. Since passing mark is 50% of max mark => passing mark = 50. Thus Roger failed in only 1 subject, where he scored 40.
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
23 Mar 2012, 05:06
NYC5648 wrote:
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
A. 1 B. 2 C. 3 D. 4 E. 5
Many thanks. Have a great Sunday!
LET MAX MARKS BE Y
then (4+5+6+7+8)x=0.72*5y => 30x=3.6y => x=36y/300=3y/25 hence
4x= 4*3y/25=12y/25--> fail 5x--> pass as all other scores are greater than 5x hence he passed in all
hence failed in 1 subject
option A _________________
Practice Practice and practice...!!
If my reply /analysis is helpful-->please press KUDOS If there's a loophole in my analysis--> suggest measures to make it airtight.
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
25 Jun 2013, 11:01
1
This post received KUDOS
1
This post was BOOKMARKED
NYC5648 wrote:
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
A. 1 B. 2 C. 3 D. 4 E. 5
Many thanks. Have a great Sunday!
For ratio and proportion questions, We can always check at first for plugging in values.
Let us assume that for each exam the max score is 100. So total max score in 5 exams is 500 where as Roger scored 72% of 500 which is 360
360 is total marks scored by Roger which is nothing but some of sum of his scores in all subjects
so we have 4a+5a+6a+7a+8a = 360 where "a" is any positive integer, solving for "a", we get 30a= 360 ----> a=12
4a= 48 < 50 and in rest all exams he passed so ans should be A _________________
“If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward.”
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
03 Jan 2014, 07:03
NYC5648 wrote:
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
A. 1 B. 2 C. 3 D. 4 E. 5
Many thanks. Have a great Sunday!
Total sum of scores is 30x
Total sum of scores is also 720
720/30 = 12 = x
So then, we can start with the first and it will give 48, fail Next is obviously 60 pass, so only 1 fail
Re: Ratio question [#permalink]
08 Mar 2014, 07:57
Bunuel wrote:
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
A. 1 B. 2 C. 3 D. 4 E. 5
Given: A:B:C:D:E=4x:5x:6x:7x:8x, for some multiple x. Assume the maximum marks of each subject to be y, so the the maximum marks of ALL 5 subjects will be 5y.
So, we have that \(4x+5x+6x+7x+8x=\frac{72}{100}*5y\) --> \(30x=\frac{72*5}{100}*y\) --> \(x=\frac{12}{100}*y\). \(4x=\frac{48}{100}*y\) and \(5x=\frac{60}{100}*y\), so in subject A Roger scored 48% (less than 50%) and in subject B 60% (more than 50%). Obviously in all other subjects Rogers scores will be higher than 50%.
Re: Ratio question [#permalink]
08 Mar 2014, 08:03
1
This post received KUDOS
Expert's post
bparrish89 wrote:
Bunuel wrote:
In last examination Roger scored marks in each of 5 subjects in the following ratio 4:5:6:7:8 and got an overall score of 72%. If 50% of the maximum marks is passing and the maximum marks of each subject is the same, in how many subjects did Roger fail?
A. 1 B. 2 C. 3 D. 4 E. 5
Given: A:B:C:D:E=4x:5x:6x:7x:8x, for some multiple x. Assume the maximum marks of each subject to be y, so the the maximum marks of ALL 5 subjects will be 5y.
So, we have that \(4x+5x+6x+7x+8x=\frac{72}{100}*5y\) --> \(30x=\frac{72*5}{100}*y\) --> \(x=\frac{12}{100}*y\). \(4x=\frac{48}{100}*y\) and \(5x=\frac{60}{100}*y\), so in subject A Roger scored 48% (less than 50%) and in subject B 60% (more than 50%). Obviously in all other subjects Rogers scores will be higher than 50%.
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
08 Mar 2014, 09:24
Option A. Let the marks be 4x,5x,6x,7x and 8x. Total=30x Avg.=6x Now 6x=72 X=12 On calculating Subject marks,we get 48,60,72,84 & 96. Only one subject is <50.
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
09 Mar 2014, 02:26
monalimishra wrote:
I did this by picking numbers. Say the max mark in each subject is 100. Then I can directly know that Roger scored 40,50,60,70,80. Since passing mark is 50% of max mark => passing mark = 50. Thus Roger failed in only 1 subject, where he scored 40.
Answer A.
Though the answer A is correct, the calculations are wrong
If we consider 40,50,60,70,80 as the scores, then the average comes up 60% _________________
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
01 May 2015, 13:39
Hello from the GMAT Club BumpBot!
Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________
Re: In last examination Roger scored marks in each of 5 subjects [#permalink]
24 May 2015, 01:10
Hi, Is my logic correct.
what i understood was 72% score implies, 72% of max that is 100% and since he got 72% in the ratios 4 5 6 7 8 therefore he got 48% of max marks in A. which is less that 50% if max marks. hence he failed in 1 subject.
gmatclubot
Re: In last examination Roger scored marks in each of 5 subjects
[#permalink]
24 May 2015, 01:10
The “3 golden nuggets” of MBA admission process With ten years of experience helping prospective students with MBA admissions and career progression, I will be writing this blog through...
You know what’s worse than getting a ding at one of your dreams schools . Yes its getting that horrid wait-listed email . This limbo is frustrating as hell . Somewhere...