Question

некоторый товар стоил 240р. его цена сначала повысилась на 25%,а затем понизилась на 25%. как изменилась цена товара и на скотлько?

Answer 1

1)240*0,25=60 р на столько повысилась цена товара

2)240+60=300 р цена товара после повышения

3)300*0,25 =75 р на столько понизилась цена товара

4)300-75= 225 р цена товара после понижения

5)240-225= 15 р на столько подешевел товар после всех изменений

================================================================ 

Answer 2

Начальная цена х=240 руб.

После повышения х+0,25х=1,25х

После понижения 1,25х-(1,25х*0,25)=1,25х-0,3125х=0,9375х

0,9375 примерно = 94%

100-94=6% После двух изменений цена снизилась на 6%

0,9375*240=225 (руб.) стала стоить после двух изменений

240-225=15 (руб)

 

Ответ: после двух изменений цена стала на 15 рублей меньше. (или примерно на 6%)

Answer 3

Calculation of the Price Change

To calculate the change in price of the item, we need to follow these steps:

1. Start with the initial price of the item, which is 240 rubles. 2. Increase the price by 25%. 3. Decrease the resulting price by 25%.

Let's calculate the change in price step by step:

1. Initial Price: The initial price of the item is 240 rubles.

2. Increase by 25%: To calculate the increase, we multiply the initial price by 1 plus the percentage increase. In this case, the percentage increase is 25%, which can be written as 0.25. So, the increased price is:

   Increased price = Initial price + (Initial price * Percentage increase)
                  = 240 + (240 * 0.25)
                  = 240 + 60
                  = 300 rubles
   

3. Decrease by 25%: To calculate the decrease, we multiply the increased price by 1 minus the percentage decrease. In this case, the percentage decrease is 25%, which can be written as 0.25. So, the final price is:

   Final price = Increased price - (Increased price * Percentage decrease)
               = 300 - (300 * 0.25)
               = 300 - 75
               = 225 rubles
   

Change in Price and Amount

The initial price of the item was 240 rubles, and after a 25% increase followed by a 25% decrease, the final price of the item is 225 rubles. Therefore, the price of the item decreased by 15 rubles.

To summarize: - The initial price of the item was 240 rubles. - The final price of the item after a 25% increase followed by a 25% decrease is 225 rubles. - The price of the item decreased by 15 rubles.

Please note that the calculations provided are based on the information given and may not reflect real-world scenarios.