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Mathematics, 22.07.2019 07:40 Angelofpink1143
It takes 10 hours to fill a pool with the inlet pipe. it can be emptied in 15 hours with the outlet pipe. if the pool is 2/3 full to begin with, how long will it take to fill it from there if both pipes are open?
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It takes 10 hours to fill a pool with the inlet pipe. it can be emptied in 15 hours with the outlet...
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