Angela can shovel the snow from her driveway in 2.5 hours. When Franklin joins her, the driveway can be finished in just 72 minutes.
How long would it take Franklin to shovel the driveway alone?

a) Let m\displaystyle {m} = the number of minutes to complete the job. Write the equation you would use to solve this problem.
(You should convert all times to minutes.)

 

b) Now solve your equation. Give your answer first as a reduced fraction, and then a decimal rounded to 3 places.

Working alone, Franklin can shovel the driveway in   minutes (fraction),
which as a decimal is minutes.