Question

Find the average of the squares numbers which lie between 20 and 70.

• A. 43.5
• B. 44.5
• C. 46.5
• D. 41.5

Answer 1

Answer:

A. 43.5

Solution: Given: Squares between 20 and 70 include 25, 36, 49, and 64 Concept: Average = Sum of values/number of values Calculation: Sum of squares = (25 + 36 + 49 + 64) = 174 The average = 174/4 = 43.5 ∴ The average of the squares between 20 and 70 is 43.5.