Предмет: Математика, автор: maximkaaaaa

заранее, спасибо.
Егор и его мать празднуют свой день рождения в один день. Сейчас мать старше сына в 11раз.Но пройдет всего 6 лет, и она будет старше всего в 5 раз, а еще через 10-только в 3 раза. Когда с сегодняшнего дня пройдет 36 лет, мать будет старше сына в 2 раза. Сколько лет сегодня исполняется Егору?

Ответы

Автор ответа: rklug

Пусть х возраст мамы, у - сына
Составим систему:
х=11у
х+6=5(у+6)
(этих двух условий достаточно)
11у+6=5у+30
6у=24
у=4
Сыну 4 года, маме 44

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