SOLUTION: Two people working together can finish laying a hardwood floor in 10 hours which the first can do alone in 15 hours. How long would it take the second person to do alone?
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Question 860190: Two people working together can finish laying a hardwood floor in 10 hours which the first can do alone in 15 hours. How long would it take the second person to do alone?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/15+1/x=1/10
2/30+1/x=3/30
1/x=1/30
x=30
check
10/15+10/30=1
2/3+1/3=1
ok
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