Question

The sum of 4 consecutive odd numbers is 40. What is the second number in ts sequence?

Answer 1

LET THE ODD NUMBERS BE
X, X+2 , X + 4 , X+6
X + X +2 + X+ 4 + X + 6 = 40
4X + 12 = 40
X + 3 = 10

X = 7
2ND NUMBER = 7+2=9

Answer 2

let the number be a, a +2 , a+4 , a+6
so,
a + a + 2 +a + 4 + a +6 = 40
4a + 12 = 40
a + 3 = 10
a = 7

second number = 7 + 2 = 9