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受欢迎的 Word Problems >

Karen is 5 years younger than Susan. 3 years ago, the sum of their ages was 11. How old are they now?

解答

K a re n i s 5 ye a rs yo u n g er t han S u s an . 3 ye a rs a g o, t h e s u m o f t h e i r a g es w a s 11. Ho w o l d a re t h ey n o w ?

解答

Karen^{'} s age is : 6

Susan^{'} s age is : 11

求解步骤

Translate the problem into an equation:

x - 3 + x + 5 - 3 = 11

求解

x, x - 3 + x + 5 - 3 = 11 : x = 6

找到 age

Karen^{'} s age is : 6

Susan^{'} s age is : 11

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