Question

10 pipes can fill a tank in 2 hrs 50 min. how long will it take 6 pipes to fill the tank?

Answer 1

10 pipes filled the tank in 170 min.

so, 1 pipes filled the tank in 170*10=1700 min.

then, 6 pipes can filled the tank in

1700/6=283.333333333=284(approx) min= 4 hour 44 min.

I hope this helps you.