SOLUTION: Dave can paint a room in one hour less time than Rachael. Together they can do it in five hours. How long will it take Dave if he does the job alone?

SOLUTION: Dave can paint a room in one hour less time than Rachael. Together they can do it in five hours. How long will it take Dave if he does the job alone?

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Question 449849: Dave can paint a room in one hour less time than Rachael. Together they can do it in five hours. How long will it take Dave if he does the job alone?
Answer by rwm(914) (Show Source): You can put this solution on YOUR website!
dave =d
r=d+1
5/(d+1)+5/(d)=1
d=9.52494
or
r=r
dave=r-1
5/r+5/(r-1)=1
r=10.5249
and dave =9.5249

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