SOLUTION: A man can paint a certain house in 5 days. He and his brother can do the job together in 3 days. How many days would it take his brother to paint the house if he worked alone?
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Question 1071009: A man can paint a certain house in 5 days. He and his brother can do the job together in 3 days. How many days would it take his brother to paint the house if he worked alone?
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A man can paint a certain house in 5 days. He and his brother can do the job together in 3 days.
How many days would it take his brother to paint the house if he worked alone?
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Working together, they paint of the house per day.
Working alone, the man can paint of the house per day.
It means, that the brother alone can paint of the house per day.
= = .
Thus the brother alone can paint of the house per day.
Hence, it will take = 7.5 days for the brother to do this job working alone.
Solved. You do not need solve equation to get the answer.
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