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受欢迎的 Word Problems >

ben is three times as old as john. the sum of their ages is 40. How old are Ben and John?

解答

b e n i s t h ree t im es a s o l d a s j o hn . t h e s u m o f t h e i r a g es i s 40. Ho w o l d a re B e n an d J o hn ?

解答

John^{'} s age is : 10

Ben^{'} s age is : 30

求解步骤

Translate the problem into an equation:

3 x + x = 40

求解

x, 3 x + x = 40 : x = 10

找到 age

John^{'} s age is : 10

Ben^{'} s age is : 30

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