SOLUTION: i am really stuck on this problem can anybody help me, thanks! One computer can process a payroll in 6 h. An older computer can do the same job in 7 h 30 min. how long would it tak

Question 550936: i am really stuck on this problem can anybody help me, thanks! One computer can process a payroll in 6 h. An older computer can do the same job in 7 h 30 min. how long would it take both computers to do the processing?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
i am really stuck on this problem can anybody help me, thanks! One computer can process a payroll in 6 h. An older computer can do the same job in 7 h 30 min. how long would it take both computers to do the processing?
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Hint: 1 computer does 1/6 of the payroll in an hour.
The other does 1/7.5 in an hour.
What do they do together?

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