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Which ratios form a proportion?

A. 20/25, 14/21
B. 10/23, 18/7
C. 5/45, 4/36
D. 5/4, 4/5

User Sazary
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1 Answer

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Your answer would be, C 5/45 and 4/36. In simplified form they both equal 1/9, meaning they are a proportion.
User Lea Verou
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