Question

If the mean of 2,4,6,8,x,y is 5 then find the value of x+y

Answer 1

x + y = 10

Explanation:

The mean is calculated as

mean =
`(total)/(count)`, thus

`(2+4+6+8+x+y)/(6)` = 5 ( multiply both sides by 6 )

20 + x + y = 30 ( subtract 20 from both sides )

x + y = 10