Question

за год цены на бензин выросли на 20% В начале года 1 л бензина стоил 15 р. какой стала цена 1 л бензина этой же марки в конце года?

Answer 1

100%+20%=120%

120%=1,2

15х1,2=18 рублей

Answer 2

100%+20%=120%=1,2

15*1,2=18р.

 

Answer 3

Calculation of the Final Price of Gasoline

To calculate the final price of gasoline at the end of the year, we need to consider that the prices increased by 20% during the year.

Let's assume that at the beginning of the year, the price of 1 liter of gasoline was 15 rubles. To find the final price, we can use the following formula:

Final Price = Initial Price + (Initial Price * Percentage Increase)

In this case, the initial price is 15 rubles and the percentage increase is 20%. Plugging these values into the formula, we get:

Final Price = 15 + (15 * 0.20)

Calculating this, we find that the final price of 1 liter of gasoline of the same brand at the end of the year is 18 rubles.

Please note that the provided information does not specify the exact year or currency, so the calculation is based on the assumption that the currency is rubles.