Предмет: Математика, автор: umsunai0085

237. Готовясь к ответственным соревнованиям, Татьяна Колпакова1 за день провела з тренировки и совершила 224 прыжка, причём на ос- новной тренировке - в 4 раза больше, чем утром, а вечером - в 2 раза меньше, чем на основной тренировке. Сколько прыжков было соверше- но вечером? это уравнение

Ответы

Автор ответа: pampiduhas
0

пусть утром будет X

тогда на основной будет 4x, а на вечерней 4x/2=2x

Итого:

x+4x+2x=224

7x=224

x=32 - утром

4x=128 - на основной

2x = 64 - вечером

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