SOLUTION: It takes 10 hours to fill a pool with water, and 20 hours to drain it. If the pool is empty and the drain is open, how long will it take to fill the pool?
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-> SOLUTION: It takes 10 hours to fill a pool with water, and 20 hours to drain it. If the pool is empty and the drain is open, how long will it take to fill the pool?
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Question 33687This question is from textbook Algebra 1
: It takes 10 hours to fill a pool with water, and 20 hours to drain it. If the pool is empty and the drain is open, how long will it take to fill the pool? This question is from textbook Algebra 1
You can put this solution on YOUR website! In 1 hour, you can fill 1/10 of the pool and in 1 hour you can empty 1/20 of the pool. If the two events occur simultaneously, then in 1 hour you can fill 1/10 - 1/20 = 1/20 of the pool.
So, at this rate, it will take 20 hours to fill the pool with the drain open.
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