GMAT prep 3

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

saurabhmahajan: Master | Next Rank: 500 Posts; Posts: 250; Joined: Thu Jan 07, 2010 2:21 am; Thanked: 10 times

by saurabhmahajan » Sun Sep 05, 2010 3:46 am

Please help in this...

Attachments

Thanks and regards,
Saurabh Mahajan

I can understand you not winning,but i will not forgive you for not trying.

Source: Beat The GMAT — Problem Solving | Sun Sep 05, 2010 3:46 am

selango: Legendary Member; Posts: 1460; Joined: Tue Dec 29, 2009 1:28 am; Thanked: 135 times; Followed by:7 members

by selango » Sun Sep 05, 2010 5:15 am

1/A+1/B=1/4

Let A=1.5B

B is faster pump.

A+B/AB=1/4

4A+4B=AB

4(1.5B)+4B=1.5B^2

10B=1.5B^2

B=10/1.5=100/15=20/3

--Anand--

• Page 1 of 1