Question

The average of three numbers is 12. If two of the numbers are 6 and 9, find the third number​

Answer 1

Answer:

average =sum of number/ 2= 9

Step-by-step explanation:

given

average=12

number 1=6

number 2 =9

number 3= ?

let's say number 3=x

12=6+9+x/2

12*2=15+x

x=24-15

x=9