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

Redeem

time & work

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Senior | Next Rank: 100 Posts
Posts: 81
Joined: Fri Apr 24, 2009 7:38 am
Thanked: 2 times
Followed by:1 members

time & work

by arghya05 » Tue Jul 28, 2009 7:45 pm
Machine X runs at a constant rate and produces a lot consisting of 100 cans in 2 hours. How much less time would it take to produce the lot of cans if both machines X and Y were run simultaneously?
(1) Both machines X and Y produce the same number of cans per hour.
(2) It takes machine X twice as long to produce the lot of cans as it takes machines X and Y running simultaneously to produce the lot.
Top
Source: — Data Sufficiency |
Legendary Member
Posts: 1161
Joined: Mon May 12, 2008 2:52 am
Location: Sydney
Thanked: 23 times
Followed by:1 members

by mehravikas » Tue Jul 28, 2009 11:05 pm
Answer should be D

(1) Both machines X and Y produce the same number of cans per hour. - It means machine Y also produces 50 cans per hour
(2) It takes machine X twice as long to produce the lot of cans as it takes machines X and Y running simultaneously to produce the lot. - Means if x can produce 50 cans in one hour, x + y can produce 100 cans in one hour.
Top
Post new topic Post Reply
• Page 1 of 1