SOLUTION: A painter can paint a certain house in 12 hours by herself but it takes her helper 15 hours to do the same job himself. the painter starts the job alone but her helper her 5 hours
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Question 666104: A painter can paint a certain house in 12 hours by herself but it takes her helper 15 hours to do the same job himself. the painter starts the job alone but her helper her 5 hours later. How long will it take the two of them together to finish painting the house? Answer by ewatrrr(24785) (Show Source):
Hi,
A painter can paint a certain house in 12 hours by herself:
In 5hrs done. of the house remaining to complete
helper 15 hours to do the same job himself: = 9/60 of the house per hour together = 35/9 hr remaining time together
