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If 5 light bulbs cost 9.00 how much does one light bulb cost 

 Oct 29, 2018
 #1
avatar+18862 
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$9.00/5bulbs = $1.80 / bulb

 Oct 29, 2018
 #2
avatar+4322 
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This is an example of direct proportion, so EP's answer is correct!
 

 Oct 29, 2018

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