Question

Цену на молоко увеличили на 10% а затем еще на 5%. сколько стоит 1 литр молока после двух наценок если ранее он стоил 12 рублей. на сколько процентов изменилась цена молока ПОМОГИТЕ ПЛИС

Answer 1

12р это 100%.
найдем 1% 12:100=0.12
первая наценка 10%
значит 1.2*10=1.2р
12+1.2=13.2 потом еще на 5%
13.2:100=0.132*5=0.675+13.2=21.75р

Answer 2

Calculation of the Price Increase

To calculate the price of 1 liter of milk after two price increases, we need to apply the increases sequentially.

Let's assume the initial price of 1 liter of milk was 12 rubles.

The first price increase is 10%, which means the price will be increased by 10% of the initial price: 10% of 12 rubles = 0.1 * 12 = 1.2 rubles

After the first increase, the new price of 1 liter of milk is: 12 rubles + 1.2 rubles = 13.2 rubles

The second price increase is 5%, which means the price will be increased by 5% of the new price: 5% of 13.2 rubles = 0.05 * 13.2 = 0.66 rubles

After the second increase, the final price of 1 liter of milk is: 13.2 rubles + 0.66 rubles = 13.86 rubles

Therefore, after the two price increases, 1 liter of milk costs 13.86 rubles.

Percentage Change in Price

To calculate the percentage change in the price of milk, we need to compare the difference between the new price and the initial price with the initial price.

The difference in price is: 13.86 rubles - 12 rubles = 1.86 rubles

The percentage change in price is: (1.86 rubles / 12 rubles) * 100% = 15.5%

Therefore, the price of milk has increased by approximately 15.5%.

Please note that the calculations provided are based on the assumption that the price increases are applied sequentially and the percentages given are accurate.