Question

Find the value of x.
8.5, 9, 7.5, 6, 7, x; The mean is 8

Answer 1

Solution

Number of items(n)=6

mean=8

Sum of items=38+x

As we have,

mean= sum of items/number of items

or,8=38+x/6

or,48=38+x

or,x=48-38

Therefore, x=10

Explanation: