Предмет: Математика, автор: soni650

в техникуме число девочек в 2 1/2 раз меньше чем число учащихся мальчиков. Сколько в техникуме мальчиков, если их на 369 больше чем девочек?

Ответы

Автор ответа: Алінка12

2 1/2 умножить на 369

Автор ответа: ndusha

х-девочки
2 1/2х=2,5х-мальчики
2,5х-х=369
1,5х=369
х=369/1,5=246

246+369=615- мальчиков

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