Mathematics, 07.01.2020 07:31, sindy35111

Aswimming pool can be filled by any of three hoses a, b or c. hoses a and b together take 4 hours to fill the pool. hoses a and c together take 5 hours to fill the pool. hoses b and c together take 6 hours to fill the pool. how many hours does it take hoses a, b and c working together to fill the pool?

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Aswimming pool can be filled by any of three hoses a, b or c. hoses a and b together take 4 hours to...