SOLUTION: Lisa can shovel the drive in 35 minutes. Bill can do the same in 40 minutes.How long would it take if the shoveled the drive together

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Lisa can shovel the drive in 35 minutes. Bill can do the same in 40 minutes.How long would it take if the shoveled the drive together      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 278181: Lisa can shovel the drive in 35 minutes. Bill can do the same in 40 minutes.How long would it take if the shoveled the drive together
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
The equation we want to set up is:
1/35+1/40=1/x Multiply by 1400x to get:
40x+35x=1400 Combine like terms to get:
75x=1400 Divide 75 into both sides to get:
x=18 2/3 minutes
There we go.
RJ
www.math=unlock.com