Question

the mean of three numbers is 12. two of the number is 9 and 14. find the other number​

Answer 1

Answer:

Let the no. be x

(x + 9 + 14) /3 = 12

x+9 +14 =36

x = 36-23

x= 13

Therefore the number is 13.

Answer 2

Answer:

The other number is 13

Step-by-step explanation:

Mean = sum of all terms / num of terms

12 = 9+14+x / 3

12 = 23 + x / 3

12*3 = 23 + x

36 = 23 + x

x = 36 - 23

x = 13