document.write( "Question 569572: Frank can type a report in 2 hours and James takes 7 hours. How long will it take the two of them typing together? \n" ); document.write( "
Algebra.Com's Answer #367369 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Frank can type a report in 2 hours and James takes 7 hours. How long will it take the two of them typing together? \n" ); document.write( ". \n" ); document.write( "Let x = time (hours) it takes typing together \n" ); document.write( "then \n" ); document.write( "x(1/2 + 1/7) = 1 \n" ); document.write( "multiplying both sides by 14: \n" ); document.write( "x(7 + 2) = 14 \n" ); document.write( "x(9) = 14 \n" ); document.write( "x = 14/9 \n" ); document.write( "x = 1.56 hours \n" ); document.write( "or \n" ); document.write( "x = 1 hour and 33 minutes \n" ); document.write( " |