document.write( "Question 1040806: John can finish a paper route in 5 hours, and Andrew can finish the same paper route in 7 hours. If they work together,how long would it take them to finish the paper route?
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Algebra.Com's Answer #655727 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! in one hour, John does 1/5 of the route and Andrew does 1/7 \n" ); document.write( "Together, they do 1/x of the whole route, x being unknown. \n" ); document.write( "(1/5)+(1/7)=(1/x) \n" ); document.write( "Multiply everything by 35x, the common denominator \n" ); document.write( "7x+5x+35 \n" ); document.write( "12x=35 \n" ); document.write( "x=35/12 or 2 11/12 hours, or 2h55m \n" ); document.write( " |