SOLUTION: An inlet pipe can fill a large water tank in 27
minutes. Another inlet pipe can fill the same
water tank in 53 minutes. Given an
empty water tank, at 8:00 AM Tuesday, acti
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Question 719703: An inlet pipe can fill a large water tank in 27
minutes. Another inlet pipe can fill the same
water tank in 53 minutes. Given an
empty water tank, at 8:00 AM Tuesday, activate both pipes.
Question: What time on the clock will it be when
the tank is completely filled?
Answer by josgarithmetic(39628) (Show Source): You can put this solution on YOUR website!
Both go open at the same time and rates of each are additive. Use tank-fill per time for the rate.
Which Tank________Rate_______________Time____________jobs
Tank 1_____________1/27_____________(___)____________
Tank 2_____________1/53_____________(___)___________
combined________1/27+1/53__________(___)____________1
Combined rate is 80/1431 tanks-worth per minute.
(1 job) *(1431/80 minutes per job) = 1431/80 minutes to fill the tank. This is 17.88 minutes, or 17 minutes and 53 seconds.
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