Question

The sum of three consecutive even numbers is 390. Find the numbers

Answer 1

Answer:

let the numbers are 2n,2n+2,2n+4

so,

(2n)+(2n+2)+(2n+4)=390

=> 2n+2n+2+2n+4=390

=> 6n+6=390

=> 6n=390-6=384

=> n= 384/6=64

=> 2n=2×64=128

so the numbers are 128,130,132

Answer 2

Answer:

Let the three numbers be x,x+1,x+2

x+(x+1)+(x+2)=390

x+x+x+1+2=390

3x+3=390

3x=390-3

3x=387

x=387/3

x=129

x+1=129+1=130

x+2=129+2=131

So the three numbers are 129,130 and 131