SOLUTION: The average of 5 numbers is 9. Four of the numbers are 2, 1, 6, and 13. What is the fifth number?

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Question 1031018: The average of 5 numbers is 9. Four of the numbers are 2, 1, 6, and 13. What is the fifth number?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi  

The average of 5 numbers is 9. Four of the numbers are 2, 1, 6, and 13. 

What is the fifth number? Let that be x

(2 + 1 + 6 + 13 + x)/5 = 9 

22 + x = 45

  x = 23