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5 April, 13:41

7. Which pair of ratios forms a proportion?

A. 6:16 and 9:25

B. 8:18 and 22:50

C. 9:21 and 15:36

D. 12:27 and 20:45

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Answers (1)
  1. 5 April, 16:03
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    Answer: D. 12:27 and 20:45

    Step-by-step explanation: Cross multiply. A, B, and C don't equal each other, but when you cross multiply D (12 x 45 and 27 x 20) you get 540 and 540. So its D
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