<PRE><B>Question 1015856</B>
A warm water faucet can fill a bathtub in 30 minutes. If the warm water faucet and cold water faucet are both turned on. The tub can be filled in just 18 minutes. How long will it take the cold water faucet working alone to fill the tub? 
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warm faucet rate:: 1/30 job/min
cold faucet rate:: 1/x job/min
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Together rate:: 1/18 job/min
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Equation:
rate + rate = together rate
1/30 + 1/x = 1/18
18x + 18*30 = 30x
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12x = 18*30
x = (3/2)30
x = 45 min (time for the cold to do the job)
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Cheers,
Stan H.
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