SOLUTION: How do you solve this working together problem? Patrice, by himself, can paint four rooms in 10 hours. If he hires April to help, they can do the same job together in 6 hours. I

Algebra ->  Rate-of-work-word-problems -> SOLUTION: How do you solve this working together problem? Patrice, by himself, can paint four rooms in 10 hours. If he hires April to help, they can do the same job together in 6 hours. I      Log On


   



Question 52417: How do you solve this working together problem?
Patrice, by himself, can paint four rooms in 10 hours. If he hires April to help, they can do the same job together in 6 hours. If he lets April work alone, how long will it take her to paint four rooms?

Found 2 solutions by stanbon, Paul:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Patrice DATA:
time=10 hr/job ; rate= 1/10 job/hr.
------------
Together DATA:
time=6 hr/job ; rate = 1/6 job/hr.
---------------
April DATA:
time= x hr/job ; rate = 1/x job/hr.
--------------
EQUATION:
Patrice rate + April Rate = Together rate
1/10 + 1/x = 1/6
Multiply thru by 30x to get:
3x + 30 = 5x
2x=30
x=15
April would take 15 hours to do the job.
Cheers,
Stan H.

Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
April can do the job is x hours;
EQUATION:
1%2F10%2B1%2Fx=1%2F6
60%281%2F10%29%2B60%281%2Fx%29=60%281%2F6%29
6%2B60%2Fx=10
10x-6x=60
4x=60
x=15
Hence, April can do the job in 15 hours.
Paul.