Multiple choice

Present age of A is 2 times the age of B. After 5 years, B's age will be 4 times C's present age. If C celebrated his seventh birthday 4 years ago, then what will be the present age (in years) of A?

  1. 73

  2. 64

  3. 78

  4. 59
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

C's age 4 years ago was 7, so C is 11 now. B's age in 5 years = 4 * 11 = 44, so B is 39 now. A is 2 * 39 = 78.

AI explanation

Since C celebrated his seventh birthday 4 years ago, C's present age is 11 years. B's age after 5 years will be 4 times C's present age, so B + 5 = 44, meaning B is 39 years old today. A's present age is 2 times B's age, so A is 2 * 39 = 78 years old.

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