Multiple choice

Four years ago, the ratio of ages of A and B is 5 : 6 and five years after the ratio will become 6 : 7, then Quantity I: present age of A Quantity II: age of B 4 years ago

  1. Quantity I > Quantity II

  2. Quantity I ≥ Quantity II

  3. Quantity II > Quantity I

  4. Quantity II ≥ Quantity I

  5. Quantity I = Quantity II or Relation cannot be established

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

4 years ago: A=5x, B=6x. Present: A=5x+4, B=6x+4. 5 years after present: (5x+4+5):(6x+4+5) = 6:7 → 5(x+9) = 6(x+9) is impossible. Correct: (5x+9):(6x+9) = 6:7 → 35x+63 = 36x+54 → x=9. A present = 5(9)+4 = 49. B 4 years ago = 6(9) = 54. 54 > 49, so Quantity II > Quantity I.