28, 40, 36, 47, 33, X
The mean is 35 What is X?
Mean = [ sum of values ] / [number of values ] ... so..
35 = [ 28 + 40 + 36 + 47 + 33 + X ] / 6 multiply both sides by 6, simplify
210 = 184 + X subtract 184 from both sides
26 = X
