document.write( "Question 347594: The officejet printer can copy a dissertation in 22 min. The Laserjet printer can copy the same document in 8 min. If the two machines work together, how long would they take to copy the dissertion? \n" ); document.write( "
Algebra.Com's Answer #248596 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 1/22+1/8=1/X \n" ); document.write( "(8+22)/(22*8)1/X \n" ); document.write( "30/176=1/X CROSS MULTIPLY. \n" ); document.write( "30X=176 \n" ); document.write( "X=176/30 \n" ); document.write( "X=5.867 HOURS WORKING TOGETHER. \n" ); document.write( "PROOF: \n" ); document.write( "1/22+1/8=1/5.867 \n" ); document.write( "(8+22)/22*8=.17 \n" ); document.write( "30/176=.17 \n" ); document.write( ".17=.17 \n" ); document.write( " |