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:

no.of pumps = 28

time taken to empty the reservoir = 18 hrs.

Time taken to empty the reservoir in 1 hr = 28/18

= 1.5 hrs.

no. of pumps = 42

time taken to empty the reservoir by 42 pumps = 1.5 × 42

= 63 hrs //.

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