SOLUTION: In a mechanics garage, Joe can service a car in 2hrs. Gary takes 3hrs, Paul takes 5hrs and Tom takes 8hrs. If they all service a car together, how long will they take?

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Question 421861: In a mechanics garage, Joe can service a car in 2hrs. Gary takes 3hrs, Paul takes 5hrs and Tom takes 8hrs. If they all service a car together, how long will they take?
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

1/2 + 1/3 + 1/5 +1/8
=[60 + 40+ 24 + 15] /120
= 139/120

so, work will complete in 120/139 hr.