Work problem

Expert replies

roger federer: Junior | Next Rank: 30 Posts; Posts: 14; Joined: Sun Mar 07, 2010 7:40 amFollowed by: 1 member; Thanked: 2 times

by roger federer » Sun Mar 07, 2010 7:46 am

Hi, can you help me with this question?

2 boys can mow a lawn in 2 hours and 30 minutes. If they are joined by 3 other boys, how many hours will it take to mow the lawn?

A. 1 H
B. 1 and 1/4 H
C. 1 and 1/2 H
D. 1 and 3/4 H
E. 2 H

Thank you for your Help

Ali

Like this post

Source: Beat The GMAT — Problem Solving | Sun Mar 07, 2010 7:46 am

firdaus117: Master | Next Rank: 500 Posts; Posts: 102; Joined: Sat Feb 20, 2010 5:38 am; Location: IIM Ahmedabad; Thanked: 10 times

by firdaus117 » Sun Mar 07, 2010 7:54 am

Work done =2*2.5=5 boys-hours
Now total 5 boys will do same work in 5/5=1 hr
Optin A

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