Multiple choice

Kinjal tells her sister that $3$ years ago, the sum of your age and my age was $36$ years. Then, after $4$ years, what will be the sum of your age and my age?

  1. $53$ years
  2. $39$ years
  3. $43$ years
  4. $50$ years
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let ages be K and S. 3 years ago: (K-3) + (S-3) = 36 => K+S = 42. After 4 years, each person is 4 years older, so the sum increases by 8. 42 + 8 = 50.