Question

The mean of numbers 11,12,5,x,8,y,10 is 12.Find the mean of x and y

Answer 1

(11+12+5+x+8+y+10)/7 = 12
So, 46+x+y= 84
x + y = 38

Now,
the mean of x and y = (x + y)/2

=38/2

Mean of x and y = 19....ans