Question

solve this question​

Answer 1

Answer:

20hrs should be answer sorry for wrong

4×5

Answer 2

Answer:

pipe filled in 4 hours but leak

then it filled in 5 hours fully

Then it emptied in

Step-by-step explanation:

A filled the cistern in 1hours =1/4

let the leak emptied be t =1/t

=1/4+1/t=1/5

=1/t=1/20

let's leak water emptied in 20 hours

Hope you satisfied with the answer