document.write( "Question 283311: Susan can do a certain job in 5 hours. Kim can do the same job in 3 hours. Working together, how many hours would they need to do the job? \n" ); document.write( "
Algebra.Com's Answer #205655 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! x/5+x/3=1 \n" ); document.write( "3x+5x=15 \n" ); document.write( "8x=15 \n" ); document.write( "x=15/8 \n" ); document.write( "x=1 7/8 hours \n" ); document.write( "x/5=15/8/5=3/8 of the job \n" ); document.write( "x/3=15/8/3=5/8 of the job \n" ); document.write( "Sue does 3/8 and Kim does 5/8 of the job \n" ); document.write( " \n" ); document.write( " |