Question

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

Answer 1

Answer:

65 hrs it will take

Step-by-step explanation:

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Answer 2

Answer- Step by Step:

(Unitary Method)

28 pumps can empty a reservoir in 18 hrs.

Therefore, 1 pump can empty the reservoir in (18*1) / 28 hrs = 9/14 hrs

Therefore, 42 pumps can empty the reservoir in 9/14 * 42 hrs = 27 hrs

ANSWER:

42 such pumps can empty the reservoir in 27 hours.

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