Multiple choice

Father's age is $10$ more than twice age of his son. What is the difference in the age of father and son, if son's age is $21$?

  1. $35$
  2. $31$
  3. $15$
  4. $25$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the son's age is 21, the father's age is 2 * 21 + 10 = 42 + 10 = 52. The difference in their ages is 52 - 21 = 31.

AI explanation

Using the given formula for the father's age, we calculate twice the son's age as 2 multiplied by 21, equaling 42 years. Adding 10 to this result gives the father's age as 52 years. The difference in their ages is 52 minus 21, equaling 31 years.

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