Question

o. 11) 20 pumps can empty a reservoir in
12hours. In how many hours can 45 such
pumps do the same work ?​

Answer 1

Answer:

20 pumps can empty a reservoir = 12 hours

1 pump can empty a reservoir= 20/12*60= 100 hours

45 such pumps= 45*100/60=75

45 pumps can 75 empty reservoir fill.