Question

the sum of three consecutive even numbers is 30

Answer 1

Let,
The three numbers be x, x+2,x+4
Now let us equate the sentence
X+x+2+x+4=30
3x+6=30
3x=30-6
3x=24
X=24/3
X=8
X+2=8+2=10
X+4=8+4=12
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Answer 2

This can be solved using the concept of A.P.
Let the numbers be a, a+d and a+2d.
As all numbers are consecutive even numbers, d=2.
So, numbers are a,a+2 and a+4.

Sum of three even numbers is 30.
So, a+a+2+a+4=30
So, 3a+6=30.
So, 3a = 30-6
So, 3a = 24.
So, a = 24/3.
So, a= 8.
So, numbers are 8, 8+2=10 and 8+4= 12