Question

Для детского сада купили 12 кукол и 14 роботов по одинаковой цене.За роботов заплатили на 260 руб больше, чем за куклы. Сколько заплатили за куклы и за роботов

Answer 1

1 робот или кукла стоит 130 рублей
130*12=1560 - заплатили за кукол
130*14=1820 - заплатили за роботов
1560+1820=3380 - заплатили за куклы и за роботов

Answer 2

Calculation of the Total Cost

To find out how much was paid for the dolls and robots, we can set up a system of equations based on the given information.

Let's assume the cost of each doll is x rubles. Since 12 dolls were purchased, the total cost of the dolls would be 12x rubles.

Similarly, let's assume the cost of each robot is also x rubles. Since 14 robots were purchased, the total cost of the robots would be 14x rubles.

According to the given information, the cost of the robots is 260 rubles more than the cost of the dolls. Therefore, we can set up the following equation:

14x = 12x + 260

Now, let's solve this equation to find the value of x and calculate the total cost of the dolls and robots.

Solving the Equation

To solve the equation, we can subtract 12x from both sides:

14x - 12x = 12x + 260 - 12x

This simplifies to:

2x = 260

Now, we can divide both sides of the equation by 2 to solve for x:

2x/2 = 260/2

x = 130

Calculation of the Total Cost

Now that we have found the value of x, which is 130 rubles, we can calculate the total cost of the dolls and robots.

The total cost of the dolls would be:

12 dolls * 130 rubles/doll = 1560 rubles

The total cost of the robots would be:

14 robots * 130 rubles/robot = 1820 rubles

Therefore, the total cost of the dolls is 1560 rubles and the total cost of the robots is 1820 rubles.

Please note that the calculations are based on the assumption that the cost of each doll and robot is the same, as mentioned in the question.