Question

How long will two pipes together take to fill a cistern which they can separetly fill in 20 minutes and 25 minutes ?​

Answer 1

In one minute, A and B can fill = 125+130=6+5150=11150 part

In 10 minutes, A and B can fill = 11150×110=1115 part

Remaining part = 1−1115=415 part

415 part is to be filled by A

In one minute A can fill 125 part

415 part can be filled in minutes 415×25=203=623minutes

Total time taken to fill the tank 10+623=1623minutes

Part of solved Pipes and Cisterns questions and answers : >> Aptitude >> Pipes and Cisterns

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