Question

Пряники стали продавать в новой упаковке, при этом масса пряников была увеличена на 25% по сравнению с массой в старой упаковке. На сколько процентов подешевели пряники, если стоимость упаковки осталось прежней?

Answer 1

На 25%. пусть 100 гр пряников стоят 100 рублей до увеличения массы. теперь 100 рублей стоит 125 гр пряников. значит сначала 1 грамм стоил 1 рубль, а теперь 1,25 гр стоит 1 рубль.

Answer 2

Calculation of the Percentage Decrease in Price of Gingerbread

To calculate the percentage decrease in price of the gingerbread, we need to consider the increase in mass and the fact that the cost of the packaging remained the same.

Let's assume that the original mass of the gingerbread in the old packaging was 100 grams. According to the information provided, the new packaging increased the mass of the gingerbread by 25%. Therefore, the new mass of the gingerbread in the new packaging would be 125 grams.

Since the cost of the packaging remained the same, the price of the gingerbread is directly proportional to its mass. Therefore, the price of the gingerbread in the new packaging would also increase by 25%.

To calculate the percentage decrease in price, we can use the following formula:

Percentage decrease = (Original price - New price) / Original price * 100

Since the price of the gingerbread increased by 25%, the new price would be 125% of the original price.

Let's calculate the percentage decrease:

Percentage decrease = (100% - 125%) / 100% * 100%

Percentage decrease = -25%

Therefore, the gingerbread has decreased in price by 25%.

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