BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Data Sufficiency question Ratio HELP

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 88
Joined: Sat Oct 15, 2011 6:38 pm
Thanked: 1 times
Followed by:1 members

Data Sufficiency question Ratio HELP

by gmatpup » Sun Nov 06, 2011 6:36 pm
What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?

1. The number of cups of flour required in the recipe is 250% of the number of cups of sugar required.

2. 1 1/2 more cups of flour than cups of sugar are required.


I thought the answer was C... but it is A

Can someone please explain? thanks :)!!
Top
Source: — Problem Solving |
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Mon Mar 21, 2011 2:12 am
GMAT Score:740

by gmatscottsdale » Sun Nov 06, 2011 6:51 pm
Q: Number of cups of flour/Number of cups of sugar = ?

1. Number of cups of flour = 2.5 * number of cups of sugar

=> Number of cups of flour/Number of cups of sugar = 2.5 - Sufficient

2. F = 1.5 + S (F = Nu. of cups of flour, S = No. of cups of sugar)

This is not sufficient because there is no way to determine Number of cups of flour/Number of cups of sugar.

Credited Response: A
Top
User avatar
Community Manager
Posts: 1060
Joined: Fri May 13, 2011 6:46 am
Location: Utrecht, The Netherlands
Thanked: 318 times
Followed by:52 members

by neelgandham » Sun Nov 06, 2011 7:04 pm
gmatpup wrote:What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?

1. The number of cups of flour required in the recipe is 250% of the number of cups of sugar required. - The ratio of the number cups of flour to the number of cups of sugar = 250/100. Sufficient

2. 1 1/2 more cups of flour than cups of sugar are required. - The ratio of the number cups of flour to the number of cups of sugar = (cups of sugar + 1.5)/cups of sugar. Insufficient
In Red.

p.s: Can you please post any Data Sufficient questions here => https://www.beatthegmat.com/data-sufficiency-f7.html
Anil Gandham
Welcome to BEATtheGMAT | Photography | Getting Started | BTG Community rules | MBA Watch
Check out GMAT Prep Now's online course at https://www.gmatprepnow.com/
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pm
Location: Milpitas, CA
Thanked: 1854 times
Followed by:523 members
GMAT Score:770

by Anurag@Gurome » Sun Nov 06, 2011 8:29 pm
gmatpup wrote:What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?

1. The number of cups of flour required in the recipe is 250% of the number of cups of sugar required.

2. 1 1/2 more cups of flour than cups of sugar are required.

I thought the answer was C... but it is A

Can someone please explain? thanks :)!!
Let number of cups of flour = F and number of cups of sugar = S
We have to find F:S

(1) F = 250% of S
F = 2.5S
2F = 5S
F:S = 5:2; SUFFICIENT.

(2) F = S + 3/2 does not give us the ratio of F:S; NOT sufficient.

The correct answer is A.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Post new topic Post Reply
• Page 1 of 1