French, asked by jyotisudha1974, 20 days ago

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Answered by pdpooja100

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Three pipes A,B and C, fills a drum in 5 hours, 15 hours and 20 hours respectively. (A)If all the taps are open, in how many hours will the drum be filled? (B) If tap A and tap B are closed after 7/2 hours, how much time will tap C take to fill the remaining work

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