Предмет: Математика, автор: anyta155

Помогите пожалуйста номер 522 решить

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Автор ответа: nikolichka7

4*10=40-копеек заплатили за белые нитки
6*10=60-копеек за чёрные нитки
60+40=100-копеек всего потратили за нитки

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