SOLUTION: 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

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?
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
2*1*X+1*2*X=600
2X+2X=600
4X=600
X=600/4
X=150 ANSWER FOR THE NUMBER IF $2.00 BULBS.
X=2*150=300 ANSWER FOR THE NUMBER OF $1.00 BULBS.
PROOF
2*150+1*300=600
300+300=600
600=600
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