There are 3 consecutive even integers that add up to 42. What is the value of the greatest integer?

해법

T h ere a re 3 co n sec u t i v e e v e n in t e g ers t ha t a dd u p t o 42. Wha t i s t h e v a l u e o f t h e g re a t es t in t e g er ?

The largest number : 16

솔루션 단계

Represent the numbers with

x

First number : x

Consecutive number 1 : x + 2

Consecutive number 2 : x + 4

A.T.Q.:

x + x + 2 + x + 4 = 42

x + x + 2 + x + 4 = 42

해결 :

x = 12

x + 2 = 12 + 2 = 14

x + 4 = 12 + 4 = 16

Select the largest solution:

16

The largest number : 16