1.

Both x and y vary directly with each other and when x = 20, y = 28. Which of the following is not a possible pair of corresponding values?

A. 25 ∶ 35
B. 35 ∶ 25
C. 35 ∶ 49
D. 15 ∶ 21
Answer» C. 35 ∶ 49


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