The average of six numbers is 20. If one number is removed, the average becomes 15. What is the number removed ?

A. 5

B. 35

C. 112

D. 45

Answer: Option D

Solution(By Examveda Team)

According to the question,
Average of six numbers is = 20
Sum of six numbers is
= 20 × 6 = 120
One number is removed then,
Average of five numbers is = 15
Sum of five numbers is = 15 × 5 = 75
∴ Remove number is
= 120 - 75 = 45