GRE Prep Club Daily Prep
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
In a certain class, every student is either a boy or a girl.
[#permalink]
20 Nov 2017, 10:31
20 Nov 2017, 10:31
3
1
3
Bookmarks
00:00
Question Stats:
75% (01:00) correct
24% (00:48) wrong based on 138 sessions
Hide Show timer Statistics
In a certain class, every student is either a boy or a girl. The boys constitute 5/13 of the students in the class.
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for correct solution.
Quantity A |
Quantity B |
The ratio of boys to girls in the class |
The fraction of the class that are girls |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for correct solution.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: In a certain class, every student is either a boy or a girl.
[#permalink]
27 Oct 2018, 10:31
27 Oct 2018, 10:31
4
1
1
Bookmarks
Carcass wrote:
In a certain class, every student is either a boy or a girl. The boys constitute \(\frac{5}{13}\) of the students in the class.
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The ratio of boys to girls in the class |
The fraction of the class that are girls |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
If 5/13 of the students are boys, then the remaining 8/13 of the students are girls.
So, we might say, for every 5 boys there are, we have 8 girls.
In other words, the ratio of boys to girls = 5/8
So, we get:
QUANTITY A: 5/8
QUANTITY B: 8/13
One option is to convert these fractions to decimals (using long division or the onscreen calculator)
Here's what I'd do on test day:
Multiply both quantities by 8 to get:
QUANTITY A: 5
QUANTITY B: 64/13
Multiply both quantities by 13 to get:
QUANTITY A: 65
QUANTITY B: 64
Answer: A
Cheers,
Brent
General Discussion
Re: In a certain class, every student is either a boy or a girl.
[#permalink]
20 May 2018, 03:47
20 May 2018, 03:47
total no of kids are 13 as we can see that 5(boys)/13(total kids)
girl to boy ratio is 5/8
Girl to total ratio is 68/13
there we have 2 factions which we have to compare. In order to compair the faction one much make the base of teh faction as EQUIVALENT.
by multiplying 13 to entity A -- 5 and 8 to 13 we have 65/104
and option B by multiplying by 8 to both numerator and denominator we get 64/104
Option A is corrrect answer.
girl to boy ratio is 5/8
Girl to total ratio is 68/13
there we have 2 factions which we have to compare. In order to compair the faction one much make the base of teh faction as EQUIVALENT.
by multiplying 13 to entity A -- 5 and 8 to 13 we have 65/104
and option B by multiplying by 8 to both numerator and denominator we get 64/104
Option A is corrrect answer.
