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Beliebt 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?

Lösung

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 ?

Lösung

John^{'} s age is : 8

Schritte zur Lösung

Translate the problem into an equation:

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

Löse nach

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

John^{'} s age is : 8

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