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1). 92). 83). 104). 7 |
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Answer» Pipes P and Q can FILL a tank in 12 HOURS and 36 hours Q’s one-day work = 1/36 P and Q‘s one-day work = 1/12 + 1/36 = 4/36 = 1/9 Total time taken by both P and Q to fill the tank = 1/(1/9) = 9 hours |
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