Question

Two pipes fill a tank when working individually in
25 and 40 hours, respectively while a third pipe
can drain the filled tank in 16 hours. If all the three
pipes are turned on at the same time when the
tank is empty, how long will it take to fill the tank
completely?​

Answer 1

Answer:

ans is 27 hour

Step-by-step explanation:

Let no. of pipe be x

A.T.Q

---------

=>3x = (25 +40 +16)hours

=>3x = 81 hours

=> x = 81/3 hours

therefore 27 hours