Предмет: Алгебра, автор: LINA99999999

Среди учеников школы поровну мальчиков и девочек, при этом доля блондинок среди девочек составляет 15%, а блондинов- в 6 раз меньше, чем мальчиков с иным цветом волос.Кого в школе больше: блондинов или блондинок?

Ответы

Автор ответа: Аноним
1
х-девочек и х-мальчиков
3х/20-число девочек блондинок
Среди мальчиков 1 часть блондинов и 6 частей иного цвета⇒х/7-число блондинов
3х/20=21х/140 и х/7=20х/140
21х/140>20х/140⇒блондинок больше,чем блондинов
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