SOLUTION: Jake can wash a car in 20 minutes, while Harold can wash the same car in 25 minutes. How long will it take them to wash the car if they work together?
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Question 1121945: Jake can wash a car in 20 minutes, while Harold can wash the same car in 25 minutes. How long will it take them to wash the car if they work together?
Found 2 solutions by josgarithmetic, ikleyn:Answer by josgarithmetic(39617) (Show Source):
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Jake can wash a car in 20 minutes, while Harold can wash the same car in 25 minutes. How long will it take them to wash the car if they work together?
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Jake can DO 1 JOB in j minutes, while Harold can DO THE SAME 1 JOB in h minutes. How long will it take them to DO THIS 1 JOB if they work together?
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Jake makes of the job per minute.
Harold makes of the job per minute.
Working together, they make + = + = of the job per minute.
It means that they complete washing one car in = minutes working together.
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