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Popular Word Problems >

John's father is 5 times older than John and John is twice as old as his sister Alice. In two years time, the sum of their ages will be 58. How old is John now?

Solução

J o h n^{'} s f a t h er i s 5 t im es o l d er t han J o hn an d J o hn i s tw i ce a s o l d a s hi s s i s t er A l i ce . I n tw o ye a rs t im e, t h e s u m o f t h e i r a g es w i ll b e 58. Ho w o l d i s J o hn n o w ?

Solução

John^{'} s age is : 8

Passos da solução

Translate the problem into an equation:

x + 2 + 5 x + 2 + \frac{x}{2} + 2 = 58

Resolver para

x, x + 2 + 5 x + 2 + \frac{x}{2} + 2 = 58 : x = 8

John^{'} s age is : 8

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