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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 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.