SOLUTION: please help me solve this problem:
if joe can service a car in the mechanic shop in 2 hr and harry can service the same car in 1 hr, how long would it take if they both service th
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-> SOLUTION: please help me solve this problem:
if joe can service a car in the mechanic shop in 2 hr and harry can service the same car in 1 hr, how long would it take if they both service th
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Question 469310: please help me solve this problem:
if joe can service a car in the mechanic shop in 2 hr and harry can service the same car in 1 hr, how long would it take if they both service that car together? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Joe does 1/2 of the job in an hour.
Harry does 1 job per hour.
Together, the do 1/2 + 1 jobs per hour = 3/2 jobs/hr
Invert --> 2/3 hours/job
