Jaime is 4 years younger than Willy. Twelve years ago, Willy was twice older than Jaime. Find their present ages.

해법

J aim e i s 4 ye a rs yo u n g er t han Wi ll y . Tw e l v e ye a rs a g o, Wi ll y w a s tw i ce o l d er t han J aim e . F in d t h e i r p rese n t a g es .

Jaime^{'} s age is : 16

Willy^{'} s age is : 20

솔루션 단계

Translate the problem into an equation:

x + 4 - 12 = 2 (x - 12)

x

해결 대상

, x + 4 - 12 = 2 (x - 12) : x = 16

age 찾다

Jaime^{'} s age is : 16

Willy^{'} s age is : 20