The average of a set of 8 numbers is 36. If one number, 48, is replaced by 24, what is the new average?
Show answer & explanation
Correct answer: C
Explanation
Average of 8 numbers = 36
Therefore, the total sum of 8 numbers = 36 × 8
= 288
Reduction in total sum upon replacing 48 with 24 = 48 - 24
= 24
New total sum = 288 - 24
= 264
New average = 264 ÷ 8
= 33