document.write( "Question 1134571: Twin brothers, Billy and Bobby, can mow their grandparent's lawn together in 77 minutes. Billy could mow the lawn by himself in 35 minutes less time that it would take Bobby. How long would it take Bobby to mow the lawn by himself? \n" ); document.write( "
Algebra.Com's Answer #751996 by josgarithmetic(39617)![]() ![]() ![]() You can put this solution on YOUR website! Bobby's rate \n" ); document.write( "\n" ); document.write( "Billy's rate \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Combined rate |