SOLUTION: it takes gary twice as long to mow his lawn as it takes his father to do the same job. if they work together they can complete the job in 1 1/2 hours. how long would it take gary t

Question 409866: it takes gary twice as long to mow his lawn as it takes his father to do the same job. if they work together they can complete the job in 1 1/2 hours. how long would it take gary to do the job alone?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
The normal setup for a problem like this is:

t is the time they work together. A and B are how long they would take working alone. The 1 represents one complete job.
For this problem, we let the first term be Gary...if if it takes Dad A hours, Gary takes 2A...

Now multiply by 2A and get

A = 9/4 = 2 1/4 hours
Therefore it takes Gary 4 1/2 hours alone...
RELATED QUESTIONS
It takes Brad 2 hours to mow his lawn. It takes Gail 3 hours to mow the same lawn. How... (answered by scott8148)

It takes Dan 20 minutes to mow the lawn; it takes his sister,Sue, 15 minutes to mow the... (answered by jorel1380)

I'm trying to help my nephew with algebra... it's been a while. 1. Brooks can mow the... (answered by rothauserc)

It takes a boy 90 minutes to mow his father's yard but his sister can do it in 60... (answered by advanced_Learner,Theo)

Karl can mow his lawn in 3 hours. His Brother can do the same job in4 hours. ow long will (answered by mananth)

It takes a boy 15 minutes longer to mow a lawn than it takes his sister. If they work... (answered by nerdybill)

It takes a boy 90 minutes to mow his parents lawn, but his brother can do it in 60... (answered by richwmiller)

Jack mows his lawn in six hours, Mary takes seven hours to mow the lawn. If they work... (answered by ankor@dixie-net.com)

When Mike uses a riding mower, it takes him 3 hours to mow his lawn. When he uses a push (answered by ewatrrr)