A winery has a vat with two pipes leading to it The inlet pipe can fill the vat in 6 hours while the outlet pipe can empty it in

Question

A winery has a vat with two pipes leading to it The inlet pipe can fill the vat in 6 hours while the outlet pipe can empty it in 10 hours How long will it take to fill the vat if both pipes are left open It will take hours Simplify your answer Do not round

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