johnso7nleafl0 johnso7nleafl0

11-06-2016
Mathematics

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One pipe fills a tank in 1 hour while another pipe can fill the same tank in 2 hours. How long will it take to fill the tank if both pipes are used?

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11-06-2016

40 minutes, = 1(tank)/(1tank/h+1/2(t/h))

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