Question

в магазине проходит рекламная акция.Цена на корм для кошек снижена га несколько рублей.теперь цена одного пакетика корма-6 рублей.это 3 четвёртых его прежней стоимости кот барсик съедает за неделю 21 пакетик такого корма.на сколько меньше стоит теперь эта недельная норма кошачьего корма?

Answer 1

1) 6\3*4 = 8 (рублей прежняя стоимость)
2) 6*21 = 126( рублей на неделю коту с акцией)
3 ) 21*8 = 168 ( рублей на неделю коту без акции)
4 ) 168 --126 = 42( рубля)
ответ : на 42 рубля

Answer 2

Calculation of the New Price for a Week's Worth of Cat Food

To calculate the new cost of a week's worth of cat food, we need to determine the original price of a packet of cat food and then calculate the new price based on the given discount.

Given information: - The original price of a packet of cat food was not provided. - The new price of a packet of cat food is 6 rubles. - The new price is 3/4 (or 3 out of 4) of the original price.

To find the original price, we can set up the following equation:

3/4 * original price = 6 rubles

To solve for the original price, we can multiply both sides of the equation by 4/3:

original price = (6 rubles) * (4/3)

Calculating the result:

original price = (6 rubles) * (4/3) = 8 rubles

Therefore, the original price of a packet of cat food was 8 rubles.

Calculation of the New Weekly Amount of Cat Food

To calculate the new weekly amount of cat food, we need to multiply the number of packets consumed in a week by the new price per packet.

Given information: - The cat named Barsik consumes 21 packets of cat food in a week. - The new price of a packet of cat food is 6 rubles.

To find the new weekly cost of cat food, we can multiply the number of packets consumed by the new price per packet:

new weekly cost = 21 packets * 6 rubles/packet

Calculating the result:

new weekly cost = 21 packets * 6 rubles/packet = 126 rubles

Therefore, the new weekly cost of cat food is 126 rubles.

Calculation of the Decrease in the Weekly Amount of Cat Food

To calculate the decrease in the weekly amount of cat food, we need to subtract the new weekly cost from the original weekly cost.

Given information: - The original weekly cost of cat food was not provided.

Unfortunately, without the original weekly cost, we cannot calculate the decrease in the weekly amount of cat food accurately. The information provided only allows us to calculate the new weekly cost based on the new price per packet.

If you have the original weekly cost of cat food, please provide it, and I will be happy to help you calculate the decrease.