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受欢迎的 Word Problems >

John is 5 years older than ellen, and 3 years ago the sum of their ages was 17. how old is John?

解答

J o hn i s 5 ye a rs o l d er t han e ll e n, an d 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 17. h o w o l d i s J o hn ?

解答

John^{'} s age is : 14

求解步骤

Translate the problem into an equation:

x - 3 + x - 5 - 3 = 17

求解

x, x - 3 + x - 5 - 3 = 17 : x = 14

John^{'} s age is : 14

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