GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 17 Oct 2018, 18:53

### GMAT 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

we will pick new questions that match your level based on your Timer History

Track

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

# M15-09

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 49968

### Show Tags

16 Sep 2014, 00:55
00:00

Difficulty:

5% (low)

Question Stats:

89% (00:48) correct 11% (01:14) wrong based on 76 sessions

### HideShow timer Statistics

If the value of fraction $$\frac{A}{B}$$ ($$A \lt B$$) will not change if $$A$$ grows by 6 and $$B$$ grows by 15, which of the following is equal to $$\frac{B}{A}$$?

A. 2.0
B. 2.1
C. 2.5
D. 2.8
E. 3.0

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 49968

### Show Tags

16 Sep 2014, 00:55
1
Official Solution:

If the value of fraction $$\frac{A}{B}$$ ($$A \lt B$$) will not change if $$A$$ grows by 6 and $$B$$ grows by 15, which of the following is equal to $$\frac{B}{A}$$?

A. 2.0
B. 2.1
C. 2.5
D. 2.8
E. 3.0

$$\frac{A}{B} = \frac{A + 6}{B + 15}$$. From here $$B(A + 6) = A(B + 15)$$ or $$6B = 15A$$ or $$\frac{B}{A} = \frac{15}{6} = 2.5$$.

_________________
Senior Manager
Joined: 08 Jun 2015
Posts: 452
Location: India
GMAT 1: 640 Q48 V29
GMAT 2: 700 Q48 V38
GPA: 3.33

### Show Tags

09 Jan 2017, 05:58
Given that A/B=(A+6)/(B+15), cross multiply to get the ratio between B and A. The answer comes out to be 2.5 i.e. option C
_________________

" The few , the fearless "

Manager
Joined: 30 Apr 2013
Posts: 84

### Show Tags

22 Nov 2017, 00:00
Can we back solve this question anyway?
Re: M15-09 &nbs [#permalink] 22 Nov 2017, 00:00
Display posts from previous: Sort by

# M15-09

Moderators: chetan2u, Bunuel

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.