Question

Average of x & y is 12 if z is 9 what is the average of x, y, z

Answer 1

Answer:

11

Step-by-step explanation:

Average age of x and y = 12

=> Ages of (x+y) /2 = 12 => Total age of x+y = 24.

Given, Age of z = 9.

Now average age of x, y and z = 24+9/3 = 33/3 = 11.