Question 614891
The mean of twelve consecutive numbers is 3,
That means the total value of the 12 numbers is +36
:
when another number is being added the result is 5. What is the thirteenth number?
let x = the value of the 13th number
:
{{{(36+x)/13}}} = 5
36 + x = 5(13)
x = 65 - 36
x = 29 is the 13th number