The average of the following numbers is 25. Find the value of X.
24, 30, 12, 18, 20, 10, 40, X
Show answer & explanation
Correct answer: D
Explanation
The Correct answer is Option 4 i.e. 46.
Given that,
The average of the 24, 30, 12, 18, 20, 10, 40, and X numbers is 25
We know that,
Average = Sum of observations/Number of observations
According to the question
⇒ (24 + 30 + 12 + 18 + 20 + 10 + 40 + X)/8 = 25
⇒ 154 + X = 200
⇒ X = 200 - 154 = 46