document.write( "Question 737434: If John can shingle a roof alone in 7 hours and Stuart can shingle a roof alone in 3 hours, how long will it take to shingle the roof if John and Stuart work together? Round your answer to the nearest hundredth.\r
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Algebra.Com's Answer #451241 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 1/3+1/7=1/x \n" ); document.write( "x=21/10 \n" ); document.write( " |