SOLUTION: sue can shovel snow from her driveway in 65 minutes. bill can do the same job in 30 minutes. how long would it take sue and bill to shovel the driveway if they worked together?

Question 314231: sue can shovel snow from her driveway in 65 minutes. bill can do the same job in 30 minutes. how long would it take sue and bill to shovel the driveway if they worked together?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
sue can shovel snow from her driveway in 65 minutes. bill can do the same job in 30 minutes. how long would it take sue and bill to shovel the driveway if they worked together?
.
Let x = minutes it takes for them to do it together
then
x(1/65 + 1/30) = 1
multiply both sides by (65)(30):
x(30 + 65) = (65)(30)
x(95) = 1950
x = 20.5 minutes

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