SOLUTION: brooks can move a lawn in 4 hours jeremy could move the same lawn twice as fast. how long would it take working together?

Question 597852: brooks can move a lawn in 4 hours jeremy could move the same lawn twice as fast. how long would it take working together?
Answer by w_parminder(53) (Show Source): You can put this solution on YOUR website!
Let they both complete the job in X hrs
Jeremy can do the work twice as fast as Brook,
So time taken by Jeremy will be HALF than that of Brook
Time taken by Brook = 4hrs
So Work rate of Brook = 1/4
Time taken by Jeremy = 2 hrs
So Work rate of Jeremy = 1/2

So X = 4/3 Hrs,i.e. 1 Hour & 20 Minutes
So when the work together, they complete the job in 1 Hour & 20 Minutes
RELATED QUESTIONS
I'm trying to help my nephew with algebra... it's been a while. 1. Brooks can mow the... (answered by rothauserc)

Lynn can mow the lawn in 3 hours using a riding lawn mower. Her brother can mow the... (answered by venugopalramana)

lynn can mow the lawn in 3 hours using a riding lawn mower. Her brother can mow the same (answered by checkley71)

Stan and Hilda can mow a lawn in 40 minutes if they work together. If Stan takes twice as (answered by mananth)

jack mows the lawn in 7 hours and susie can mow the same lawn in 4 hours, how long would... (answered by Alan3354,RAY100)

Can you help me solve this? Tom can mow the lawn in 4 hours. Perry can mow the same lawn... (answered by Boreal)

Jack usually mows his lawn in 7 hours. Marilyn can move the same yard in 5 hours. How... (answered by jim_thompson5910)

It takes Bob three hours to mow a lawn, and John can mow the same lawn in 2 hours. How... (answered by solver91311)

Sidney can mow the law in 4 hours using her riding mower. Her son can mow the same lawn... (answered by richwmiller)