Multiple choice

The average age of A, B, and C is 24 years. 3 years ago the average age of B and C is 20 years. Find the age of A, 9 years hence.

  1. 23

  2. 35

  3. 41

  4. 50

  5. Cannot be determined
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Average age of A, B, C = 24, so total age = 24 × 3 = 72 years. 3 years ago, B and C's average was 20, so their total age then = 20 × 2 = 40. Therefore, B and C's current total age = 40 + 6 = 46 years (adding 3 years for each). A's current age = 72 - 46 = 26 years. A's age 9 years hence = 26 + 9 = 35 years.

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