Question

) The average of three numbers is 8,that of the first two is 11. Find the third number?​

Answer 1

Answer:

2

Step-by-step explanation:

let the number be x , y and z avarage of x,y,z is 8. x+y+z/3 =8. x+y+z = 24 avarage of x ,y is 11 x+y/2= 11 x+y= 22 so z == 2