SOLUTION: Your friend can address envelopes twice as fast as you can. Together you and your friend address all the envelopes in 3 hours. How long would it take your friend to address the env

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Your friend can address envelopes twice as fast as you can. Together you and your friend address all the envelopes in 3 hours. How long would it take your friend to address the env      Log On


   

Question 633941: Your friend can address envelopes twice as fast as you can. Together you and your friend address all the envelopes in 3 hours. How long would it take your friend to address the envelopes alone?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3/x+3/y=1;
x=2y
x=9 y=9/2 =4.5 hours the friend
he does 2/3 and you do 1/3 of the job.