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Популярное Word Problems >

John is twice as old as his friend Peter. Peter is 5 years older than Alice. In 5 years, John will be three times as old as Alice. How old is Peter?

Решение

J o hn i s tw i ce a s o l d a s hi s f r i e n d P e t er . P e t er i s 5 ye a rs o l d er t han A l i ce . I n 5 ye a rs, J o hn w i ll b e t h ree t im es a s o l d a s A l i ce . Ho w o l d i s P e t er ?

Решение

Peter^{'} s age is : 5

Шаги решения

Translate the problem into an equation:

2 x + 5 = 3 (x - 5 + 5)

Решите для

x, 2 x + 5 = 3 (x - 5 + 5) : x = 5

Peter^{'} s age is : 5

Популярные примеры

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