SOLUTION: It takes x hours to fill a swimming pool when only hose #1 is used. It takes y hours to fill the pool if only hose #2 is used. Write a rational expression to show how long it ta
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-> SOLUTION: It takes x hours to fill a swimming pool when only hose #1 is used. It takes y hours to fill the pool if only hose #2 is used. Write a rational expression to show how long it ta
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Question 443652: It takes x hours to fill a swimming pool when only hose #1 is used. It takes y hours to fill the pool if only hose #2 is used. Write a rational expression to show how long it takes to fill the pool if both hoses are used.
Can someone answer the question and explain how you got there? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Filling the pool is 1 job
x hours hose 1
so hose 1 will do 1/x of the job in 1 hour
..
Similarly hose 2 will do 1/y of the jon in 1 hour.
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together they will do 1/x + 1/y of the job in 1 hour
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= (x+y)/xy
..
to do the complete job they together will take
xy/(x+y) hours
