Question

I'll give medals!!!!!

The sum of three consecutive numbers is 57. What is the largest of these numbers?

18
19
20
21

Answer 1

ive got it!!
is it 20

Answer 2

Let 'x' be the 1st number
'x+1' be the 2nd number
'x+2' be the 3rd number
-------------------------
Since the sum of the 3 is 57 then
x + x+1 + x+2 = 57
x + x + x = 57 - 1 - 2
3x = 54
x = 18
x+1 =19
x+2=20

Answer 3

once again thanks @shinalcantara