The average of five numbers is 15. If one number is 10, what is the average of the remaining four numbers? - mathselab.com

The average of five numbers is 15. If one number is 10, what is the average of the remaining four numbers?

Question:

The average of five numbers is 15. If one number is 10, what is the average of the remaining four numbers?



Options:

A) 13 
B) 14 
C) 15 
D) 16



Answer:

C) 15



Solution:

Sum of all five numbers = Average × Number of numbers

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