SOLUTION: two pipes are turned on at the same time to fill up a pool. one pipe runs twice as fast as the other. it takes the two pipes 2 hours to fill up the pool together. if only the faste

Algebra ->  Rate-of-work-word-problems -> SOLUTION: two pipes are turned on at the same time to fill up a pool. one pipe runs twice as fast as the other. it takes the two pipes 2 hours to fill up the pool together. if only the faste      Log On


   



Question 836600: two pipes are turned on at the same time to fill up a pool. one pipe runs twice as fast as the other. it takes the two pipes 2 hours to fill up the pool together. if only the faster pipe was turned on, how long would it take for it to fill up the pool alone?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
2/x+2/2x=1
4/2x+2/2x=1
6/2x=1
3/x=1
x=3 faster
2x=6 slower