Problem Solving (PS) | Re: Two water pumps, working simultaneously at their respective constant

Two water pumps, working simultaneously at their respective constant rates, took exactly four hours to fill a certain swimming pool. If the constant rate of one pump was 1.5 times the constant rate of the other, how many hours would it have taken the faster pump to fill the pool if it had worked alone at it's constant rate?

A. 5
B. 16/3
C. 11/2
D. 6
E. 20/3

[spoiler=]Work rate problems are my weakest area. For whatever reason I get mixed up on these problem. Even knowing the answer to this question I can't figure out how it comes out to that answer. Any help would be great, thanks

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Statistics : Posted by MBAPREPbyMBAHOUSE • on 12 Jul 2013, 07:26 • Replies 40 • Views 75231

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