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1. If x : y = 5 : 3, then (8x – 5y) : (8x + 5y) =?

  • A. 3 : 12
  • B. 3 : 12
  • C. 3 : 12
  • D. 3 : 12

Answer: Option D

Explanation:

Hints: x/y = 5/3

8x/5y = 8 × 5/5 × 3

8x - 5y /8x + 5y = 40 - 15 / 40 + 15 = 25/58 = 5/11 = 5 : 11


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