SOLUTION: A sink has two faucets: one for hot water and one for cold water. The sink can be filled by a cold water faucet in 5 minutes. If both faucets are open, the sink is filled in 3 minu
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Question 890804: A sink has two faucets: one for hot water and one for cold water. The sink can be filled by a cold water faucet in 5 minutes. If both faucets are open, the sink is filled in 3 minutes. How long does it take to fill the sink with just the hot water faucet open? Found 2 solutions by FrankM, richwmiller:Answer by FrankM(1040) (Show Source):
You can put this solution on YOUR website! Say the sink has a 15 gal capacity. The cold water runs 3gal/minute.
If the sink is filled in 3 minutes, it's filling at 5 gals per minute, therefore the hot water runs at 2 gal/minute.
You can put this solution on YOUR website! 1/5+1/x=1/3
3/5+3/x=1
3/x=2/5
2x=15
x=7.5 minutes for the hot water
check
3/7.5+3/5=1
3/7.5=2/5
6/15=6/15
ok
