document.write( "Question 568307: a painter can finish painting a house in 8 hours. Her assistant takes 10 hours to finish the same job. how long would it take for them to complete the job if they were working together? \n" ); document.write( "
Algebra.Com's Answer #366904 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! a painter can finish painting a house in 8 hours. Her assistant takes 10 hours to finish the same job. how long would it take for them to complete the job if they were working together? \n" ); document.write( "Let x = time (hours) it takes working together \n" ); document.write( "then \n" ); document.write( "x(1/8 + 1/10) = 1 \n" ); document.write( "multiplying both sides by 80: \n" ); document.write( "x(10 + 8) = 80 \n" ); document.write( "x(18) = 80 \n" ); document.write( "x = 80/18 \n" ); document.write( "x = 4.44 hours \n" ); document.write( "or \n" ); document.write( "x = 4 hours and 27 minutes \n" ); document.write( " |