Question

Хоккейные коньки стоили 4500 руб. Сначала цену снизили на 20%, а потом эту сниженную цену повысили на 20%. Сколько стали стоить коньки после повышения цены? Запишите решение и ответ.

Answer 1

4500- 100%
х - 20%
х = 20*4500/100 = 900 руб

4500-900 = 3600 руб

3600-100%
х -20%
х = 3600*20/100 = 720 руб

3600+720 = 4320 руб стали стоит

Answer 2

4500 сначала... потом снизили на 20%, т.е. 3600 стало , потом Эту цену повысили на 20% , значит стало 4320 руб
(4500/100)*20= 900 (цена снижения)
4500-900=3600
(3600/100)*20=720(цена повышения)
3600+720=4320 
ОТВЕТ: 4320

Answer 3

Problem Analysis

We are given that a pair of hockey skates initially cost 4500 rubles. The price is then reduced by 20%, and after that, the reduced price is increased by 20%. We need to determine the final price of the skates after the price increase.

Solution

Let's break down the problem step by step:

1. The initial price of the skates is 4500 rubles. 2. The price is reduced by 20%. To calculate the reduced price, we multiply the initial price by (100% - 20%) or 80%. 3. The reduced price is then increased by 20%. To calculate the final price, we multiply the reduced price by (100% + 20%) or 120%.

Let's calculate the final price using these steps:

1. Initial price: 4500 rubles. 2. Reduced price: 4500 * 80% = 3600 rubles. 3. Final price: 3600 * 120% = 4320 rubles.

Therefore, the skates cost 4320 rubles after the price increase.

Answer

The skates cost 4320 rubles after the price increase.