Question

the sum of three consecutive odd numbers is 57.find the numbers

Answer 1

let no.s be n , n+2,n+4
a.t.q.
n+n+2+n+4=57
3n+6=57
3n=51
n=17
nos are 17 19 and 21

Answer 2

Let the number be x.
So consecutive numbers = x+1 and x+2
so, x+x+1+x+2 = 57
3x+3 = 57
3x = 57-3
x = 54/3 = 18

∴ x = 18
x+1 = 18+1 = 19
x+2 = 18+2 = 20

∴ the consecutive numbers are 18, 19 and 20.