Question

Товар стоил 500 рублей. Определите его цену после двух изменений цены - сначала повысили цену на 10%, а потом понизили цену на 20%. Пример: 134 + 24 (5519 - 104) : 15 выполнить по действиям.​

Answer 1

1) 500+0,1×500=550руб (после повышения на 10%)

2) 550-0,2×550=440руб (после понижения на 20%)

Ответ: окончательная цена товара 440руб

Answer 2

500+50-110=440
Решение 500:100•10=50
550:100•20=440

Answer 3

Problem Analysis

We are given a product that initially cost 500 rubles. The price of the product undergoes two changes: first, it is increased by 10%, and then it is decreased by 20%. We need to determine the final price of the product after these two changes.

Solution

To find the final price of the product, we can follow these steps:

1. Calculate the price after the first change, which is a 10% increase. 2. Calculate the price after the second change, which is a 20% decrease.

Let's perform these calculations step by step.

Calculation

1. Calculate the price after the first change, which is a 10% increase: - Increase = 10% of 500 rubles = 0.1 * 500 rubles = 50 rubles - New price = Initial price + Increase = 500 rubles + 50 rubles = 550 rubles

2. Calculate the price after the second change, which is a 20% decrease: - Decrease = 20% of 550 rubles = 0.2 * 550 rubles = 110 rubles - Final price = New price - Decrease = 550 rubles - 110 rubles = 440 rubles

Therefore, the final price of the product after the two changes is 440 rubles.

Answer

The final price of the product after a 10% increase followed by a 20% decrease is 440 rubles.

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