Question

После уценки телевизора новая цена составила 0,7 старой цены.на сколько процентов уменьшилась цена телевизора в результате уценки? Помогите прошу!! Срочно!! И пожалуйста, с объяснением.

Answer 1

100% = 1 (целое)
70% = 0,7

100% - 70% = 1 - 0,7 = 0,3 = 30% - на столько уменьшилась цена.

Answer 2

1-0,7=0,3 -на такую часть уменьшилась цена
0,3=30%
Ответ: цена уменьшилась на 30%

Answer 3

Calculation of the Price Reduction Percentage

To calculate the percentage by which the price of the television decreased after the markdown, we can use the following formula:

Price Reduction Percentage = ((Old Price - New Price) / Old Price) * 100

Given that the new price is 0.7 times the old price, we can substitute these values into the formula:

Price Reduction Percentage = ((Old Price - 0.7 * Old Price) / Old Price) * 100

Simplifying the equation:

Price Reduction Percentage = (0.3 * Old Price / Old Price) * 100

The Old Price cancels out, leaving us with:

Price Reduction Percentage = 0.3 * 100

Therefore, the price of the television decreased by 30% as a result of the markdown.