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OpenStudy (anonymous):
A school ordered $600 worth of lightbulbs. Some of the lightbulbs cost $1 each and the other cost $2 each. if twice as many $1 bulbs as $2 bulbs were ordered, how many lightbulbs were ordered altogether?
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OpenStudy (mertsj):
x=$2 lightbulbs 2x= $1 lightbulbs 2x+2x=600 4x=400 x=150 $2 lightbulbs 2x= 300 $1 lightbulbs Total of 450 lightbulbs
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