Question

If one pipe A can fill the tank in 20minutes , then 5 pipes ,each of20% efficiency of A,can fill the tank in...........?

Answer 1

Heya !!

Efficiency of pipe A

100 /20 = 5%

20% of efficiency of A = 1%

efficiency of 5 such pipes = 5%.

Time taken to fill the tank = 100 /5 = 20 min.

Answer 2

20 min
Because 20%*5=100%=A