Question

work? 28 pumps can empty a reservoir in 18 hours. In how many hours can 42 such pumps do the same work? write full answer with full sentence. ​

Answer 1

Answer:

12 hrs

Step-by-step explanation:

$42 \div 28 = 1.5$

so the can work 1.5 times.

then,

$18 \div 1.5 = 12$

they can complete the work in 12 hours