SOLUTION: lisa can shovel snow from her driveway in 60 minutes. bill can do the same in 55 minutes. how long would it take lisa and bill to shovel the driveway if they worked together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: lisa can shovel snow from her driveway in 60 minutes. bill can do the same in 55 minutes. how long would it take lisa and bill to shovel the driveway if they worked together?      Log On


   

Question 582094: lisa can shovel snow from her driveway in 60 minutes. bill can do the same in 55 minutes. how long would it take lisa and bill to shovel the driveway if they worked together?
Found 3 solutions by Alan3354, DominoEfx, richwmiller:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
lisa can shovel snow from her driveway in 60 minutes. bill can do the same in 55 minutes. how long would it take lisa and bill to shovel the driveway if they worked together?
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Lisa does 1/60 per minute
Bill does 1/55 per minute
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What do they do together?
How long does it take working together?

Answer by DominoEfx(1) About Me  (Show Source):
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
1/60+1/55=1/x
Working together should be about 30 minutes
x = 660/23
x = 28.696