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Word Problems, Work/Rate Problems

Expert replies
by AAPL » Thu Feb 11, 2021 3:30 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty

Three pipes \(A, B,\) and \(C\) can fill tank in \(10, 15\) and \(25\) minutes respectively. All the three taps are used simultaneously to fill the tank. But, due to a leak at the bottom of the tank, only \(\dfrac{1}{3}\)rd of the tank was filled by the time it was supposed to be full. In how much time could the leak empty a full tank?

A. \(\dfrac{75}{31}\)

B. \(\dfrac{150}{31}\)

C. \(\dfrac{225}{31}\)

D. \(\dfrac{15}{2}\)

E. \(\dfrac{450}{31}\)

The OA is C

Source: E-GMAT
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Source: — Problem Solving |