document.write( "Question 940286: two roads crew working together repaired 1 mile of the road in four hours. working separately one of the crews takes about six hours to repair a similar road. how long would it take the other crew working alone to repair a similar Road? \n" ); document.write( "
Algebra.Com's Answer #573233 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! two roads crew working together repaired 1 mile of the road in four hours. \n" ); document.write( " working separately one of the crews takes about six hours to repair a similar road. \n" ); document.write( " how long would it take the other crew working alone to repair a similar Road? \n" ); document.write( ": \n" ); document.write( "let t = time required by the \"other crew\" to do the job \n" ); document.write( "let the completed job = 1 \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Each crew does a fraction of the job, the two fractions add up to 1 \n" ); document.write( "multiply equation by 6t, cancel the denominators and you have: \n" ); document.write( "4t + 6(4) = 6t \n" ); document.write( "24 = 6t - 4t \n" ); document.write( "24 = 2t \n" ); document.write( "t = 24/2 \n" ); document.write( "t = 12 hrs for the other crew to do the job \n" ); document.write( ": \n" ); document.write( "; \n" ); document.write( "Check this \n" ); document.write( " \n" ); document.write( "reduce fractions \n" ); document.write( " |