Franco is twice as old as Marco. The sum of their ages is 5 times Marco's age less than 48. How old are they now?

해법

F r an co i s tw i ce a s o l d a s M a rco . T h e s u m o f t h e i r a g es i s 5 t im es M a rc o^{'} s a g e l ess t han 48. Ho w o l d a re t h ey n o w ?

Marco^{'} s age is : 6

Franco^{'} s age is : 12

솔루션 단계

Translate the problem into an equation:

2 x + x = 48 - 5 x

x

해결 대상

, 2 x + x = 48 - 5 x : x = 6

age 찾다

Marco^{'} s age is : 6

Franco^{'} s age is : 12