If the average of 4, 6, x, and 10 is 8, find the value of x.
Show answer & explanation
Correct answer: A
Explanation
Given:
Numbers = 4, 6, x, 10
Average = 8
By the formula:
Average = (Sum of numbers) / (Number of numbers)
8 = (4 + 6 + x + 10) / 4
8 = (20 + x) / 4
32 = 20 + x
x = 12