SOLUTION: Andrew can paint the neighbors house 5 times as fast as Bailey. They year Andrew and Bailey worked together it took them 9 days. How long would it take each to paint the house?
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Question 1200416: Andrew can paint the neighbors house 5 times as fast as Bailey. They year Andrew and Bailey worked together it took them 9 days. How long would it take each to paint the house? Found 2 solutions by josgarithmetic, ikleyn:Answer by josgarithmetic(39620) (Show Source):
Alternative to that algebraic solutions is THIS mental solution below:
When they will complete the job, Andrew will complete 5/6 of the job, while Bailey will complete 1/6 of the job.
Thus Bailey makes 1/6 of the job in 9 days.
Hence, Bailey can make the entire job in 6*9 - 54 days working alone.
It implies that Andrew can complete the job in 54/5 = 10 days, working alone.
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