SOLUTION: Maria can shovel snow from her driveway in 60 minutes. Jim can do the same job in 55 minutes. How long would it take maria and jim to shovel the driveway if they worked together?

Question 329158: Maria can shovel snow from her driveway in 60 minutes. Jim can do the same job in 55 minutes. How long would it take maria and jim to shovel the driveway if they worked together?
Thank you
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
M does 1/60 of the job per minute.
J does 1/55 per minute.
Together, they do 1/60 + 1/55 per minute
= 60/3300 + 55/3300
= 115/3300 per minute
--> 3300/115 minutes per job
= 660/23 minutes
=~ 28.7 minutes
-----------------
Use the shortcut, product/sum
60*55/(60 + 55)
= same answer

RELATED QUESTIONS
Maria can shovel snow from her driveway in 60 minutes, jim can do the same job in 55... (answered by solver91311)

Maria can shovel snow from her driveway in 50 minutes. Jim can do the same job in 65... (answered by josgarithmetic)

Maria can shovel snow from her driveway in 65 minutes. Tom can do the same job in 45... (answered by scott8148,oberobic)

Lisa can shovel snow from her driveway in 65 minutes. Jim can do the same job in 55... (answered by checkley77)

Lisa can shovel snow from her driveway in 65 minutes. Jim can to the same job in 55... (answered by Alan3354)

Sue can shovel snow from her driveway in 35 minutes. Jim can do the same job in 30... (answered by saifoo.khan)

Maria can shovel her driveway in 65 minutes. Bill can do the same job in 40 minutes.... (answered by nerdybill)

sue can shovel snow from her driveway in 40 minutes. Jim can do the same job in 50... (answered by Alan3354)

Lisa can shovel snow from her driveway in 35 minutes. Tom can do the same job in 55... (answered by nerdybill)