Предмет: Экономика, автор: Лалка2281488

Спрос на фрукты обратно пропорционален их цене и снизился в декабре по сравнению с сентябрем на 30%. На сколько процентов выросла цена на фрукты за этот период?

Ответы

Автор ответа: Аноним
0
Решение:
Пусть х% – цена
30/х = (х-30)
х= 30/(х-30)
х=30х-1
29х=1
х=1/29*100% = 3,4%
Ответ: цена на фрукты выросла на 3,4%.
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