Question

Pipes a and b can fill an empty tank in 10 hours and 15 hourz respectively. If both are opened together in the empty tank, how much time will they take to fill.It completely?

Answer 1

Answer:

6 hours

Step-by-step explanation:

Pipe A's 1 hr work = 1/10

Pipe B's 1 hr work  = 1/15

(A+B)'s 1 hr work = (1/10) + (1/15)

                    = 1/6

So both the pipes will take 6 hours to fill the tank.