Question

28 pumps can empty a reservoir in 18 hours. In how many hours can 42 such pumps do the same work​

Answer 1

Step-by-step explanation:

pump is pumping fart which farts very foul

Answer 2

Answer:

27 hour

Step-by-step explanation:

If 28 pumps can empty a reservoir in 18 hours.

then

1 pumps can empty a reservoir in 18/28 hours.

so

42 pumps can empty a reservoir in 18*42/28= 27 hours.