Target Test Prep's 2024 GMAT Focus Edition prep is discounted for the BTG community!

Redeem
Target Test Prep
5-Day Free Trial
5-day free, full-access trial TTP

Available with Beat the GMAT members only code

MORE DETAILS
Target Test Prep
Magoosh
Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

MORE DETAILS
Magoosh

GMAT Prep # 21

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Sun Aug 05, 2007 4:12 pm

GMAT Prep # 21

by Steve Hwang » Fri Nov 02, 2007 10:22 am
21. Six machines, each working at the constant rate, together cna compete a certain job in 12 days. How many additional machines, each working at the same constant rate, will be needed to complete the job in 8days?

2 days
3 days
4 days
6 days
8 days
Attachments
GMAT Prep test1.Q21.jpg
Top
Master | Next Rank: 500 Posts
Posts: 258
Joined: Mon Aug 27, 2007 12:43 pm
Thanked: 15 times

by ri2007 » Fri Nov 02, 2007 11:45 am
6 machines take 12 days, so u need 9 machines to complete the job in 8 days
i.e 3 machines more
so ans is b
Top
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Sun Aug 05, 2007 4:12 pm

Got it

by Steve Hwang » Fri Nov 02, 2007 1:13 pm
I just understand this question correctly...

thanks for your explanation.
Top
Post new topic Post Reply
• Page 1 of 1