Find four consecutive odd integers whose sum is 56.

해법

F in d f o u r co n sec u t i v e o dd in t e g ers w h ose s u m i s 56.

The numbers : 11, 13, 15, 17

솔루션 단계

Represent the numbers with

x

First number : x

Consecutive number 1 : x + 2

Consecutive number 2 : x + 4

Consecutive number 3 : x + 6

A.T.Q.:

x + x + 2 + x + 4 + x + 6 = 56

x + x + 2 + x + 4 + x + 6 = 56

해결 :

x = 11

x + 2 = 11 + 2 = 13

x + 4 = 11 + 4 = 15

x + 6 = 11 + 6 = 17

The numbers : 11, 13, 15, 17