The average of 12 numbers is 46. Four numbers 20, 8, 12 and 40 were removed. What will be the new average?
Show answer & explanation
Correct answer: B
Explanation
Given:
Total numbers = 12, Average = 46
Removed numbers = 20, 8, 12, 40
According to the formula:
Sum = Average × Number
Total Sum = 12 × 46 = 552
Sum of removed numbers = 20 + 8 + 12 + 40 = 80
New Sum = 552 − 80 = 472
New number count = 12 − 4 = 8
New Average = 472 / 8 = 59