Question

The average of three numbers is 15. two of them numbers are 17 and 14 . what is the third number?,​

Answer 1

19

Explanation:

Given average of 3 numbers = 17 Total of 3 numbers = 17×3 = 51. Given average of 2 numbers = 16 Total of 2 numbers = 16×2 = 32 Therefore, Third Number = 51–32 = 19