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.

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3