SOLUTION: 5. James and Andy have been hired to paint a barn. James can paint the barn in 5 days working alone. Together, James and Andy can finish the barn in 2 days. How long would it tak

Question 355145: 5. James and Andy have been hired to paint a barn. James can paint the barn in 5 days working alone. Together, James and Andy can finish the barn in 2 days. How long would it take Andy, working alone, to paint the barn
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
1/5+1/x=1/2
1/x=1/2-1/5
1/x=(5-2)/2*5
1/x=3/10
3x=10
x=10/3
x=3.33 hours for Andy to paint the barn working alone.
Proof:
1/5+1/3.33=1/2
(3.33+5)/(5*3.33)16.67=1/2
8.33/16.67=1/2
1/2=1/2
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