Ted can mow the lawn in 5 minutes by using his power mower. Galen takes 15 minutes to mow the same lawn using a push-type mower. How many minutes would the job take if the two boys worked together? If t is the time working together, which of the following expressions represents the portion of the job that Ted will complete when the guys work together?
Accepted Solution
A:
We need to calculate a TIME. Here, TIME = job / rate