Multiple choice

A man is 5 years older than his sister and four times as old as his daughter. If the daughter becomes 20 years old after 4 years. Then what is the present age of his sister?

  1. 71 years

  2. 59 years

  3. 64 years

  4. 56 years
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let the daughter's present age be x. After 4 years she becomes 20, so x = 16. The man is four times as old as his daughter, so man = 4 × 16 = 64 years. The man is 5 years older than his sister, so sister = 64 - 5 = 59 years.

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