SOLUTION: A large pipe can fill a swimming pool in 10 hours, while a smaller pipe can empty the pool in 15 hours. How long would it take to fill the pool if both pipes were accidentally left

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: A large pipe can fill a swimming pool in 10 hours, while a smaller pipe can empty the pool in 15 hours. How long would it take to fill the pool if both pipes were accidentally left      Log On


   

Question 1167922: A large pipe can fill a swimming pool in 10 hours, while a smaller pipe can empty the pool in 15 hours. How long would it take to fill the pool if both pipes were accidentally left open?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A large pipe can fill a swimming pool in 10 hours, while a smaller pipe can empty the pool in 15 hours. How long would it take to fill the pool if both pipes were accidentally left open?
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1/10 of the pool per hour added
1/15 of the pool per hour drained
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1/10 - 1/15 = 1/30 gained per hour
---> 30 hours