ratios

Expert replies

Previous Topic Next Topic

Vignesh.4384: Master | Next Rank: 500 Posts; Posts: 443; Joined: Sat Jun 28, 2008 6:33 pm; Thanked: 5 times

by Vignesh.4384 » Mon Sep 29, 2008 12:20 am

Hi,

Please could you tel me the answer .
I have theOA but i think it is wrong.

Attachments

Like this post

Source: Beat The GMAT — Problem Solving | Mon Sep 29, 2008 12:20 am

manulath: Senior | Next Rank: 100 Posts; Posts: 35; Joined: Tue Sep 09, 2008 10:12 pm; Location: Lko; Thanked: 3 times

by manulath » Mon Sep 29, 2008 12:33 am

Let Red cars be R, Black cars be B

R:B = 3:8

or R/B = 3/8

R = B*3/8

we know B= 72

so R = 72*3/8 = 27

.......................................

Like this post

amitansu: Master | Next Rank: 500 Posts; Posts: 294; Joined: Tue Feb 26, 2008 9:05 pmFollowed by: 1 member; Thanked: 13 times

by amitansu » Mon Sep 29, 2008 12:33 am

The ans should be 27.

ratio=3/8
black=72 i.e. 8*9 => 3*9=27 since antecedent and consequent both need to be multiplied with same no. to equate.

Amit

Like this post

Vignesh.4384: Master | Next Rank: 500 Posts; Posts: 443; Joined: Sat Jun 28, 2008 6:33 pm; Thanked: 5 times

by Vignesh.4384 » Mon Sep 29, 2008 12:35 am

thank you .
Even i got 27 . But the OA said 24 . I knew i was correct but just wanted 2 clarify

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review