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

SOLUTION: one pipe fills a pool in 6 hours. a 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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Question 373010: one pipe fills a pool in 6 hours. a 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 scott8148(6628) (Show Source): You can put this solution on YOUR website!
they each fill some FRACTION of the pool , based on their individual times
the fractions add to one (the WHOLE pool)

(x / 6) + (x / 4) = 1

multiplying by 12 (the LCD) ___ 2x + 3x = 12
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