SOLUTION: a water faucet can fill a sink in 6 minutes, whereas the drain can empty it in 4 minutes. if the sing is full, how long will it take to empty if both the faucet and the drain are o
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-> SOLUTION: a water faucet can fill a sink in 6 minutes, whereas the drain can empty it in 4 minutes. if the sing is full, how long will it take to empty if both the faucet and the drain are o
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Question 119321: a water faucet can fill a sink in 6 minutes, whereas the drain can empty it in 4 minutes. if the sing is full, how long will it take to empty if both the faucet and the drain are open? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A water faucet can fill a sink in 6 minutes, whereas the drain can empty it in 4 minutes. if the sing is full, how long will it take to empty if both the faucet and the drain are open?
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Let t = time for this to occur
Let the empty sink = 1
: - = 1
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Get rid of the denominators, multiply equation by 12
12* - 12* = 12(1)
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Cancel out the denominators and you have:
3t - 2t = 12
:
t = 12 min
:
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Check in original equaiton: - =
3 - 2 = 1; confirms our solution of t = 12
:
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That was pretty easy, right?
