Question

The sum of three consecutive odd number is 129. Determine the second number

Answer 1

Answer:

41, 43 and 45

Step-by-step explanation:

Let the three consecutive odd numbers be x, x + 2 and x + 4

Given, sum of those three odd numbers is 129

According to the question,

x + x + 2 + x + 4 = 129

3x + 6 = 129

3x = 129 - 6

3x = 123

x = $\dfrac{123}{3}$

x = 41

1st odd number => x

=> 41

2nd odd number => x + 2

=> 41 + 2

=> 43

3rd odd number => x + 4

=> 41 + 4

=> 45

∴ The three consecutive odd numbers are 41, 43 and 45

Answer 2

$\huge\bf\orange {Hey \: there !!}$



▶ Question - The sum of three consecutive odd number is 129. Determine the second number.



▶ Explanation :-



Let the three consecutive odd numbers be x, x + 2, x + 4



Given sum of the three consecutive odd numbers is 129



According to the Question :-



=> x + x + 2 + x + 4 = 129


=> 3x + 6 = 129


=> 3x = 129 - 6


=> 3x = 123


=> x = 123 / 3


=> x = 41



∴ First number = x


= 41



∴ Second number = x + 2


= 41 + 2


= 43



∴ Third number = x + 4


= 41 + 4


= 45



∴ The three consecutive odd numbers whose sum is 129 are 41, 43 and 45




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