Question

A pipe can fill a cistern in 9 hours due to a leak in its bottom the cistern fills up in 10 hour if the cistern is full in how much time will it be emptied the leak​

Answer 1

Step-by-step explanation:

A=9 efficiency=90/9=10

(Filler) lcm(9,10)=90

A+B=10 Efficency=90/10=9

(leak)

Efficency of B=10-9=1

Empty the tank =90/1=90hr