a tank of 100litres has two taps one tap pours in 60L in 5mins and takes out 14L in 2mins. find the time taken to fill that tank when both taps are open

Answer 1

Divide the volume (L) by the net fill rate (L/min):

100/(60/5 - 14/2) = 20 min

Answer 2

60 L in 5 min ----> 12 L in 1 minute = input
14 L in 2 min ----> 7 L in 1 minute = output

net input = 5 L/min

time to fill 100L
= 100/5 L/min
= 20 minutes