SOLUTION: You know it takes 11.5 hours to fill your pool with your faucet and hose.
Last year, you used both your hose and a hose borrowed from a neighbor, and it took 9 hours. This year, y
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Question 1174520: You know it takes 11.5 hours to fill your pool with your faucet and hose.
Last year, you used both your hose and a hose borrowed from a neighbor, and it took 9 hours. This year, your faucet is broken and you can only use your neighbor's hose. How long will it take?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
You know it takes 11.5 hours to fill your pool with your faucet and hose.
Last year, you used both your hose and a hose borrowed from a neighbor, and it took 9 hours.
This year, your faucet is broken and you can only use your neighbor's hose.
How long will it take?
:
let n = time for neighbor's hose to fill the pool
let the completed job = 1; a full pool
:
+ = 1
multiply the eq by 11.5n, cancel the denominators
9n + 9(11.5) = 11.5n
9n + 103.5 = 11.5n
103.5 = 11.5n - 9n
103.5 = 2.5n
n = 103.5/2.5
n = 41.4 hrs to fill the pool with the neighbor's hose.
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