SOLUTION: It takes 8 hours to fill a pool with the inlet pipe. It can be emptied in 12 hours with the outlet pipe. If the pool is 1/2 full to begin with, how long will it take to fill it fro
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Question 669609: It takes 8 hours to fill a pool with the inlet pipe. It can be emptied in 12 hours with the outlet pipe. If the pool is 1/2 full to begin with, how long will it take to fill it from there if both pipes are open?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
It takes 8 hours to fill a pool with the inlet pipe.
It can be emptied in 12 hours with the outlet pipe.
If the pool is 1/2 full to begin with, how long will it take to fill it from there if both pipes are open?
:
let t = time when both valves are left open
:
let the completed job = 1 (full pool)
:
- =
multiply by 24, resulting in
3t - 2t = 12
t = 12 hrs to complete filling the pool
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