Question

За 4 пирожных дали сдачу 40 рублей, за 6 пирожных сказали доплатить 40 рублей .Сколько рублей стоит 1 пирожное?

Answer 1

40/(6-4) = 40/2 = 20 р - цена одного . 

Answer 2

Calculation of the Cost of One Pastry

To calculate the cost of one pastry, we can set up a system of equations based on the given information.

Let's assume the cost of one pastry is x rubles.

From the first statement, we know that for 4 pastries, the change received is 40 rubles. This can be represented as:

4x + 40 = 0 From the second statement, we know that for 6 pastries, an additional payment of 40 rubles is required. This can be represented as:

6x - 40 = 0 To find the cost of one pastry, we can solve this system of equations.

Solving the System of Equations

We can solve the system of equations using the method of substitution or elimination.

Let's use the method of substitution:

From equation 1, we have:

4x + 40 = 0

Solving for x:

4x = -40

x = -40/4

x = -10

From equation 2, we have:

6x - 40 = 0

Substituting the value of x:

6(-10) - 40 = 0

-60 - 40 = 0

-100 = 0

The equation is not satisfied, which means there is no solution for this system of equations.

Conclusion

Based on the given information, it seems that there is no consistent solution for the cost of one pastry. It is possible that there is an error in the information provided or in the calculations.

Please double-check the information and calculations to ensure accuracy.