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# Working alone, pump A can empty a pool in 3 hours. Working a

Author Message
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Senior Manager
Joined: 20 May 2014
Posts: 282
Followers: 7

Kudos [?]: 35 [2] , given: 219

Working alone, pump A can empty a pool in 3 hours. Working a [#permalink]  27 May 2014, 06:20
2
KUDOS
00:00

Difficulty:

5% (low)

Question Stats:

100% (01:02) correct 0% (00:00) wrong based on 4 sessions
Working alone, pump A can empty a pool in 3 hours. Working alone, pump B can empty the same pool in 2 hours. Working together, how many minutes will it take pump A and pump B to empty the pool?

A. 72
B. 75
C. 84
D. 96
E. 108

Level: Medium.
[Reveal] Spoiler: OA
Intern
Joined: 18 Jun 2014
Posts: 42
Followers: 0

Kudos [?]: 15 [0], given: 15

Re: Working alone, pump A can empty a pool in 3 hours. Working a [#permalink]  14 Jul 2014, 03:38
A
Re: Working alone, pump A can empty a pool in 3 hours. Working a   [#permalink] 14 Jul 2014, 03:38
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