SOLUTION: Lisa can shovel snow from her driveway in 65 minutes. Jim can to the same job in 55 minutes. How long would it take lisa and jim to shovel the driveway if they worked together?

Question 1190520: Lisa can shovel snow from her driveway in 65 minutes. Jim can to the same job in 55 minutes. How long would it take lisa and jim to shovel the driveway if they worked together?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Lisa can shovel snow from her driveway in 65 minutes. Jim can to the same job in 55 minutes. How long would it take lisa and jim to shovel the driveway if they worked together?
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Lisa does 1/65 of the job per minute.
Jim does 1/55 of the job per minute.
Together, they do (1/65) + (1/55) per minute.
================
--> 65*55/(65 + 55) minutes

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