80. 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?

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80. 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?
05
Aug
80. 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? 80. A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps [...]
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