document.write( "Question 314486: ben can paint a face in 3 hours and billy takes 4. How many hours will it take them to painting together? \n" ); document.write( "
Algebra.Com's Answer #224852 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! ben can paint a face in 3 hours and billy takes 4. How many hours will it take them to painting together? \n" ); document.write( ". \n" ); document.write( "Let x = time it takes for them to paint it together \n" ); document.write( "then \n" ); document.write( "x(1/3 + 1/4) = 1 \n" ); document.write( "x(4 + 3) = 12 \n" ); document.write( "7x = 12 \n" ); document.write( "x = 12/7 hours \n" ); document.write( "or \n" ); document.write( "x = 1 hour and 43 minutes \n" ); document.write( " |