Question

Two pipes can fill a tank in 18 min and 24 min, respectively. Both are opened simultaneously. After how many minutes should the first pipe be closed so that the tank becomes full in 16 min?​

Answer 1

Answer:

18×24 = 432 min.

So 1st pipe will closed in 27 min.

2nd pipe will closed in = 60-27 = 33 min