Question

Two pipes, A and B, can fill a tank together in 72 minutes. Both pipes are turned on at the same time. However, pipe B is turned off after 60 minutes, and the tank gets completely filled in a total of 1 hour and 20 minutes. How long would it take for pipe B alone to fill the tank?

Q: Answer-Two pipes, A and B, can fill a tank together in 72 minutes. Both pipes are turned on at the same tim...

Let pipe A and B can fill x units and y units, of water per minute.Total capacity of tank 72 x y unitsAccording to question60 x y 20x 72 x y80x 60y 72x 72y8x 12y2x 3yx 1.5yDesired time 72 1.5y yy 180 minutes 3 hours

A 2 hr 20 mins

B 3 hr 45 mins

C 2 hr 30 mins

D 3 hr

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Two pipes, A and B, can fill a tank together in 72 minutes. Both pipes are turned on at the same time. However, pipe B is turned off after 60 minutes, and the tank gets completely filled in a total of 1 hour and 20 minutes. How long would it take for pipe B alone to fill the tank?

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