Multiple choice

What is the average of the numbers 10, 15, 20, 25, and 30?

  1. 56

  2. 20

  3. 43

  4. 60

  5. 120
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Average = (10 + 15 + 20 + 25 + 30) / 5 = 100 / 5 = 20.

AI explanation

Using the formula for calculating an average, divide the sum of the numbers by the total count of the numbers. The sum of 10, 15, 20, 25, and 30 is 100, and there are 5 numbers in the set. Dividing the sum of 100 by the count of 5 gives an average of 20.

Keep practicing — related questions