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प्रश्न
A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3` hours?
उत्तर
A swimming pool can be filled in 4 hours by 8 pumps.
If we want to fill the swimming pool in 1 h, we required 4 × 8 = 32 pumps
In `2 2/3` i.e. `8/3 h`, the number of pumps required = `32 ÷ 8/3`
= `(32 xx 3)/8`
= 4 × 3
= 12 pumps
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