document.write( "Question 260617: Josh can deliver his newspapers in 30 minutes. If Amber helps him, it takes 12 minutes working together. How long would it take amber working by herself? I think that the minutes have to be put into a fraction of the number over 60 but i am not sure.. \n" ); document.write( "
Algebra.Com's Answer #191983 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Josh can deliver his newspapers in 30 minutes. If Amber helps him, it takes 12 minutes working together. How long would it take amber working by herself? \n" ); document.write( ". \n" ); document.write( "Let x = minutes it takes Amber to deliver by herself \n" ); document.write( "then \n" ); document.write( "12(1/30 + 1/x) = 1 \n" ); document.write( "Multiply both sides by 30x: \n" ); document.write( "12(x + 30) = 30x \n" ); document.write( "12x + 360 = 30x \n" ); document.write( "360 = 18x \n" ); document.write( "360/18 = x \n" ); document.write( "20 minutes = x \n" ); document.write( " \n" ); document.write( " |