1.

To solve situations that are inversely proportional, we use the relation

A. a ∶ b ∶∶ c ∶ d
B. a ∶ d ∶∶ c : b
C. a ∶ b ∶∶ b ∶ a
D. a ∶ c ∶∶ b ∶ d
Answer» C. a ∶ b ∶∶ b ∶ a


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