SOLUTION: The mean of five numbers is 9. If one of the five numbers is removed, the mean becomes 10. What is the value of the number that was removed?

Algebra ->  Sequences-and-series -> SOLUTION: The mean of five numbers is 9. If one of the five numbers is removed, the mean becomes 10. What is the value of the number that was removed?      Log On


   

Question 780385: The mean of five numbers is 9. If one of the five numbers is removed, the mean becomes 10. What is the value of the number that was removed?
Answer by psbhowmick(878) About Me  (Show Source):
You can put this solution on YOUR website!
The one removed is: 5x9 - 4x10 = 45 - 40 = 5