document.write( "Question 165572: if jeanne can type 20 pages in 40 minutes and jim can type 20 pages in 30 minutes, how long will it take them to type 20 pages working together? \n" ); document.write( "
Algebra.Com's Answer #122032 by Mathtut(3670)![]() ![]() ![]() You can put this solution on YOUR website! jean types at a rate of 1/2 page per minute 20/40 \n" ); document.write( "Jim types at a rate of 2/3 page per minute 20/30\r \n" ); document.write( "\n" ); document.write( "together: would be 1/2t+2/3t=20 where t is time.\r \n" ); document.write( "\n" ); document.write( "find a common denominator and you get 7/6t=20 multiply both sides by 6 and you get 7t=120 so t=appx 17.1 minutes \n" ); document.write( " |