Multiple choice

B’s age is 10 years older than A. If the ratio of B’s age 11 years hence and C’s present age is 3 : 2. At present C’s age is thrice A’s age. What will be the age of C after 11 years?

  1. 18 years

  2. 23 years

  3. 28 years

  4. 25 years

  5. None of these

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

Let A's age = a. Then B = a+10. Given: (B+11)/C = 3/2, so C = 2(B+11)/3 = 2(a+21)/3. Also: C = 3a. So 3a = 2(a+21)/3, 9a = 2a+42, 7a = 42, a = 6. Then C = 18. After 11 years, C = 29. None of the options match 29.