document.write( "Question 737582: Working alone, Carlos can oil the lanes in a bowling alley in five hours. Jenny can oil lanes in nine hours. If they worked together, how long would it take them? \n" ); document.write( "
Algebra.Com's Answer #450748 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
1/5+1/9=1/x
\n" ); document.write( "x = 45/14
\n" ); document.write( "x = 3.2143 hours together
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