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A swimming pool can be filled in 8 hrs by 4 equal pumps. How many such pumps are required if the pool is to be filled 5 1/3 hours.

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A swimming pool can be filled in 8 hrs by 4 equal pumps. How many such pumps are required if the pool is to be filled in 5 1/3 hours.

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Number of pumps required to fill the pool in 8 hours= 4 pumps

Number of pumps required to fill the pool in 5 1/3 hours= x

Proportion= 8:4::16/3:x

16/3 x 4= 8x

64/3= 8x

x= 64/3 x 1/8 = 8/3= 2 2/3 pumps (Answer)

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