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?

3.75 minutes.

Step-by-step explanation:

Let t represent the time taken by both to complete the work.

We have been given that Ted can mow the lawn in 5 minutes by using his power mower. So part of lawn mowed by Ted in one minute would be .

We are also told that Galen takes 15 minutes to mow the same lawn using a push-type mower. So part of lawn mowed by Galen in one minute would be .

Since both are mowing one lawn, so we can set an equation as:

Cross multiply:

Therefore, it will take 3.75 minutes for both to complete the job.

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²