Question

The sum of 3 consecutive even numbers is 270. What is the first number in this sequence?

Answer 1

Let the 3 consecutive even numbers be a,a+2, a+4.
Then,
According to the question
a+a+2+a+4=270
3a+6=270
3a=270-6
3a=264
a=264/3
a=88
Therefore,the first number is 88.
The consecutive even numbers are 88 , 90 , 92.

Answer 2

Let the three consecutive even numbers be x, x+2, x+4
Given that their sum is 270
=> x+x+2+x+4=270
=> 3x+6=270
=> 3x= 270-6
=> 3x= 264
=> x=264/3
=> x= 88
Therefore the numbers are 88, 90, 92