What is the second number in this sequence?

Question

The sum of 3 consecutive even numbers is 78.

Answer 1

"What is the second number? "

 

Often, you might benefit from assigning x to the value the problem asks you to find (so you won't forget to solve for it at the end).

 

The three consecutive even numbers are   (x-2), x, and (x+2)

 

"sum of 3 consecutive even numbers is 78"    means

     (x-2) + x + (x+2) = 78

        3x = 78

         x = 26

 

The second number in this sequence is 26.

Answer 2

X + (X+2) + (X+4) = 78

 

3x + 6 = 78

 

3x = 72

 

x=24

 

 

24, 26, 28