Вопрос школьника по предмету Математика
задача
портфель учителя в котором лежат только 2 авторучки и 40 одинаковых тетрадей весит 2 кг при этом пустой портфель весит 1 кг 100 грамм
А авторучка весит 50 грамм
Сколько грамм весит 1 тетрадь ?
Ответ учителя по предмету Математика
(2000г-1кг-50-50):40=20 решение 2000г это 2кг
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