document.write( "Question 93451: A school ordered $600 worth of lightbulbs. Some of the lightbulbs cost $1 each and the others cost $2 each. If twice as many $1 bulbs as $2 bulbs were ordered, how many lightbulbs were ordered altogehter? \n" ); document.write( "
Algebra.Com's Answer #68033 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! 2*1*X+1*2*X=600 \n" ); document.write( "2X+2X=600 \n" ); document.write( "4X=600 \n" ); document.write( "X=600/4 \n" ); document.write( "X=150 ANSWER FOR THE NUMBER IF $2.00 BULBS. \n" ); document.write( "X=2*150=300 ANSWER FOR THE NUMBER OF $1.00 BULBS. \n" ); document.write( "PROOF \n" ); document.write( "2*150+1*300=600 \n" ); document.write( "300+300=600 \n" ); document.write( "600=600 \n" ); document.write( " |