Question 324678
Two pipes can fill a large tank in 10 hours. One of the pipes, used alone, takes 15 hours longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
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2-pipes DATA:
time = 10 hr/job ; rate = 1/10 job/hr
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1-pipe DATA:
time = 15 hr/job ; rate = 1/15 job/hr
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Other pipe DATA:
time = x hr/job ; rate = 1/x job/hr
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Equation:
rate + rate = together rate
1/x + 1/15 = 1/10
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Multiply thru by 30x to get:
30 + 2x = 3x
x = 30 hr. (time required by "Other" pipe)
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Cheers,
Stan H.
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