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인기 있는 Word Problems >

Susan is twice as old as Luna. The sum of their ages 4 years ago was 37. Find how old they are now.

해법

S u s an i s tw i ce a s o l d a s Lu na . T h e s u m o f t h e i r a g es 4 ye a rs a g o w a s 37. F in d h o w o l d t h ey a re n o w .

해법

Luna^{'} s age is : 15

Susan^{'} s age is : 30

솔루션 단계

Translate the problem into an equation:

2 x - 4 + x - 4 = 37

x

해결 대상

, 2 x - 4 + x - 4 = 37 : x = 15

age 찾다

Luna^{'} s age is : 15

Susan^{'} s age is : 30

인기 있는 예

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