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Q: The LCM of two prime numbers x and y (x > y) is 119. The value of 3y – x is:
  • A. 2
  • B. 4
  • C. 6
  • D. 8
Correct Answer: Option B - LCM = 119 ∴ Numbers x and y = 17 × 7 ∴ x = 17, y = 7 3y – x = 3 × 7 – 17 = 21 – 17 = 4
B. LCM = 119 ∴ Numbers x and y = 17 × 7 ∴ x = 17, y = 7 3y – x = 3 × 7 – 17 = 21 – 17 = 4

Explanations:

LCM = 119 ∴ Numbers x and y = 17 × 7 ∴ x = 17, y = 7 3y – x = 3 × 7 – 17 = 21 – 17 = 4