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At the marquet, 5 light bulbs cost $9. How much do 7 light bulbs cost?
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At the marquet, 5 light bulbs cost $9. How much do 7 light bulbs cost?

User Tsilb
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1 Answer

1 vote

Answer:


(5)/(9) = (7)/(x)


x = (63)/(5) = 12.6

User Gaelgillard
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