Question

If the mean of the following set is 12, what is x?

(1,14,3,15,16,x,21,10)

 

Answer 1

The given set is

1, 14, 3, 15, 16, x, 21, 10

Mean  =  [ 1 + 14 + 3 + 15 + 16 + x + 21 + 10 ] / 8

12  =  (80 + x ) / 8

80 + x  =  12 X 8

80 + x  =  96

x  =  96 - 80

x  =  16

Answer :

The Valuo of x is 16.