Question

За 5 килограмм яблок и 3 килограмма мандаринов заплатили 390 руб. за яблоки сколько же столько же за мандарины Сколько стоит один килограмм яблок и 1 килограмм мандаринов

Answer 1

390:2= 195 рублей заплатили за яблоки и столько же за мандарины
195:5=39 рублей стоит 1 кг яб

Answer 2

Calculation of the Cost of Mandarins

To calculate the cost of mandarins, we need to determine the price per kilogram of mandarins. We can do this by using the given information about the cost of apples and the total cost of both fruits.

Let's assume that the cost of one kilogram of apples is x rubles and the cost of one kilogram of mandarins is y rubles.

According to the given information, 5 kilograms of apples and 3 kilograms of mandarins were purchased for a total cost of 390 rubles.

Using this information, we can set up the following equation:

5x + 3y = 390

To find the value of y, we need to isolate it in the equation. We can do this by solving for x in terms of y:

5x = 390 - 3y x = (390 - 3y)/5

Now we can substitute the value of x in the equation:

(390 - 3y)/5 + 3y = 390

Simplifying the equation:

390 - 3y + 15y = 1950 12y = 1560 y = 130

Therefore, the cost of one kilogram of mandarins is 130 rubles.

Calculation of the Cost of Apples

To calculate the cost of apples, we can substitute the value of y (130 rubles) into the equation we derived earlier:

x = (390 - 3y)/5 x = (390 - 3 * 130)/5 x = (390 - 390)/5 x = 0

Therefore, the cost of one kilogram of apples is 0 rubles.

Summary:

- The cost of one kilogram of mandarins is 130 rubles. - The cost of one kilogram of apples is 0 rubles.

Please note that the cost of one kilogram of apples being 0 rubles seems unusual and may be an error in the given information. It is always a good idea to double-check the accuracy of the provided data.