Water Tank

Algebra Level 2

One pipe can fill a tank three times as fast as another pipe. If together two pipes can fill the tank in 36 minutes, then the slower pipe will fill the tank in....

150 minutes 144 minutes 50 minutes 48 minutes

Deepak Gowda by Deepak Gowda , 32, India

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2 solutions

Ossama Ismail
Dec 30, 2014

Slower pipe will fill 1/4 of the tank in 36 min

To fill the tank this will take 4 * 36 = 144

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Deepak Gowda
Jun 21, 2014

comparing two pipes , Pipe 1 = 3 * pipe 2

Work ratio, pipe 1 : pipe 2 = 1 : 3

Time ratio will be, 3 : 1

when both pipes are operated together,

3 x *x / (3 x + x) = 36, x = 48 minutes

slower pipe takes 3 * x = 48 * 3 = 144 minutes to fill the tank

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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