Eight pumps can empty a water tank in 42 hours. How many hours would 52 pumps take to do the same work ?
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8 pumps complete the work in 42hrs
1 pump will complete the work in 42/8 hrs
52 pumps will complete the work in (42/8)*52
=273 hrs
1 pump will complete the work in 42/8 hrs
52 pumps will complete the work in (42/8)*52
=273 hrs
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