SOLUTION: One pipe fills a pool in 6 hours. Second pipe can fill the same pool in 4 hours. How long would it take to fill the pool if both pipes were working.

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 Click here to see ALL problems on Rate-of-work-word-problems Question 378384: One pipe fills a pool in 6 hours. Second pipe can fill the same pool in 4 hours. How long would it take to fill the pool if both pipes were working.Answer by stanbon(57967)   (Show Source): You can put this solution on YOUR website!One pipe fills a pool in 6 hours. Second pipe can fill the same pool in 4 hours. How long would it take to fill the pool if both pipes were working. ------ 1st pipe rate = 1/6 job/hr 2nd pipe rate = 1/4 job/hr Together rate = 1/x job/hr -------------------------------- Equation: rate + rate = together rate 1/6 + 1/4 = 1/x 2x + 3x = 12 5x = 12 x = 12/5 hrs = 2.4 hrs (time to fill the pool if both pipes are working) ======================= Cheers, Stan H.