Question

Костюм стоил 1 800 р. Сначала его цену повысили 20%, а потом новую цену снизили на 10%. Какой стала цена костюма после этих изменений? На сколько процентов изменилась начальная цена костюма?

Answer 1

1 800р.- 100%
1%=18
18*20=360р-20% повысилась цена
1800+360=2160-цена после повышения
18*10=180р-10%
2160-180=1980р.-новая цена.
Ответ: 1980р., на 10%

Answer 2

Calculation of the New Price of the Suit

To calculate the new price of the suit after the price increase of 20% and subsequent price reduction of 10%, we can follow these steps:

1. Start with the initial price of the suit, which is 1,800 rubles. 2. Increase the price by 20%: 1,800 + (1,800 * 0.20) = 2,160 rubles. 3. Reduce the increased price by 10%: 2,160 - (2,160 * 0.10) = 1,944 rubles.

Therefore, the new price of the suit after these changes is 1,944 rubles.

Calculation of the Percentage Change in the Initial Price

To calculate the percentage change in the initial price of the suit, we can use the following formula:

Percentage Change = ((New Price - Initial Price) / Initial Price) * 100

1. Initial price of the suit: 1,800 rubles. 2. New price of the suit after the changes: 1,944 rubles.

Using the formula, we can calculate the percentage change:

((1,944 - 1,800) / 1,800) * 100 = 8%

Therefore, the initial price of the suit changed by 8%.

Please note that the calculations provided above are based on the information given and may not reflect the actual pricing or discounts applied in a specific scenario.