document.write( "Question 838010: if lisa were to paint her living room alone, it would take 2 hours. Her sister Marie could do the job in 5 hours. How long would it take them working together? \n" ); document.write( "
Algebra.Com's Answer #504821 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 1/2+1/5=1/x \n" ); document.write( "5/10+2/10=1/x \n" ); document.write( "7/10=1/x \n" ); document.write( "10/7=x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |