Предмет: Математика, автор: alex0202

За перший день було продано мобільних телефонів у чотири рази менше, ніж за другий. кільки телефонів було продано кожного дня, якщо за другий було продано на 12 телефонів більше, ніж за перший?

Ответы

Автор ответа: ali79

х-продано в первый день

4х-продано во второй день

4х-х=12

3х=12

х=4 телефона продали в первый день

4*4=16 телефонов продали во второй день

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