Question

A water tank has two inlets and one outlet.
The inlets fill the tank in 30 minutes and
45 minutes, respectively, and the outlet
empties it in 30 minutes. How much time
will it take to fill the tank if all the inlets and
outlets are open?
(Write statements )

Answer 1

Answer:

oye hoye kakksjensn

Step-by-step explanation:

yaar mujhe nhi pata

Answer 2

Answer:

Step-by-step explanation:

inlet=20min=1/20 (A let)

outlet=40min=1/40 (B let)

hence, the work done by a&b

=a+b=1/20+(-1/40)=1/40

hence tank will get filled in 40 minutes.