If , what is the ratio of to ?

Answer and explanation

Correct answer: D. 7 : 1

  1. Step 1: Cross-multiply the rational equation: .
  2. Step 2: Rearrange terms to isolate and : .
Answer
7 : 1.
Why not the others: '5 : 1' subtracts ; '3 : 2' is an arbitrary ratio; '4 : 1' divides incorrectly.

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