Question

if 15 pumps can empty a resevour in
21 hours, then time required by 45 such
pumps to empty the same reservoir is how many hours
​

Answer 1

Answer:

5 .33

Step-by-step explanation:

12 pumps empty the reservoir in 20 hours

12 pumps =20hours

45 pumps =y hours

So there is a inverse relation between them

:- 45 pumps can empty the same reservoir 5 . 33 hours

hope it helps