document.write( "Question 283680: pump A can do a job in 42 mins and pump B can do a job in 35 mins. how long if both pumps are used. \n" ); document.write( "
Algebra.Com's Answer #205859 by richwmiller(17219) You can put this solution on YOUR website! x/42+x/35=1 \n" ); document.write( "x/6+x/5=7 \n" ); document.write( "5x+6x=210 \n" ); document.write( "11x=210 \n" ); document.write( "x=210/11 =19 minutes and about 1 second.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |