Предмет: Математика, автор: BannikovaKaty

Отцу и сыну вместе 60 лет. Через 5 лет отец будет втрое старше сына. сколько лет каждому?

Ответы

Автор ответа: leragishko

Через 5 лет им будет вместе 70 лет.
70/4 = 17,5 ( сыну)
17,5*3 =52,5 (отцу)
Сейчас.
17,5-5=12,5(сыну)
52,5-5=47,5 (отцу)

Автор ответа: BannikovaKaty

спасибо)

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