Multiple choice

The ages of five children are 15, 12, 13, 11, 10 years. Find their average age.

  1. 12 years

  2. 12.3 years

  3. 12.2 years

  4. 14.2 years

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

To find the average, add the ages (15+12+13+11+10 = 61) and divide by the number of children (5). 61 / 5 = 12.2.

AI explanation

To find the mean, add all the given ages together and divide by the number of children. The sum of 15, 12, 13, 11, and 10 is 61. Dividing this sum by 5 gives an average age of 12.2 years.