SOLUTION: Noel can paint a house in 8 hours, while Topher can paint the same place in 15 hours. They work together for 4 hours. After 4 hours, Noel left, and Topher finished the job alone. H

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Noel can paint a house in 8 hours, while Topher can paint the same place in 15 hours. They work together for 4 hours. After 4 hours, Noel left, and Topher finished the job alone. H      Log On


   



Question 1183732: Noel can paint a house in 8 hours, while Topher can paint the same place in 15 hours. They work together for 4 hours. After 4 hours, Noel left, and Topher finished the job alone. How many more days did it take Topher to complete the job?


Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
4%281%2F8%2B1%2F15%29%2Bt%281%2F15%29=1, the time t for Topher to finish, IN HOURS

1%2F2%2B4%2F15%2Bt%2F15=1, common denominator, 30
30%281%2F2%29%2B120%2F15%2B30t%2F15=30
15%2B8%2B2t=30
2t=15-8
2t=7
t=3%261%2F2HOURS

Answer by ikleyn(52834) About Me  (Show Source):
You can put this solution on YOUR website!
.
Noel can paint a house in 8 hours, while Topher can paint the same place in 15 hours. They work together for 4 hours.
After 4 hours, Noel left, and Topher finished the job alone. How many more days did it take Topher to complete the job?
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The problem is formulated  INCORRECTLY  in your post.

The correct formulation is as follows


    Noel can paint a house in 8 hours, while Topher can paint the same place in 15 hours. They work together for 4 hours. 
    After 4 hours, Noel left, and Topher finished the job alone. How many more highlight%28cross%28days%29%29  HOURS  did it take Topher to complete the job?


I saw similar corruptions in some other your posts.


I don't know if you corrupt the problem/(the problems)  intently or by mistake,  due to total misunderstanding of the subject,

but to see it is   V E R Y   U N P L E A S A N T.


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If you continue play this game  (posting corrupted problems),
then do not be surprised if I will delete your posts.