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A winery has a vat with two valves The inlet valve can fill the cat in 6 hours The outlet can empyty it in 10 hours How long with it take to fill the vat if both valves are left open?
Wiki User
∙ 14y ago
The inlet valve fills 1/6th of the vat in an hour.
The outlet valve drains 1/10th of the vat in an hour.
When they are both open, (1/6th - 1/10th) of the vat fills in an hour.
(1/6 - 1/10) = (5/30 - 3/30) = 2/30 = 1/15th fills in one hour.
So with both valves open, it takes 15 hours to fill the vat.
Wiki User
∙ 14y ago
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