Question

В магазине продавали 2-х и 3-х колёсные велосипеды.Миша пересчитал все рули и колёса.Получилось 12 рулей и 27 колёс.Сколько 3-х колёсных велосипедов продали?

Answer 1

27:3
27 примерно 24
Получается 24:3=8
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Answer 2

Если 12 рулей то значит 12 велосипедов, тогда:
9×2=18 колес у 9ти 2х колесных
3×3=9 колес у 3х 3х колесных
проверяем:
18+9=27 колес всего колес
9+3=12 рулей или всего велосипедов

Answer 3

Problem Analysis

To solve this problem, we need to determine the number of 3-wheel bicycles sold based on the given information. We know that there are a total of 12 handlebars and 27 wheels. We also know that the store sells both 2-wheel and 3-wheel bicycles.

Solution

Let's assume that the number of 2-wheel bicycles sold is represented by x and the number of 3-wheel bicycles sold is represented by y.

From the given information, we can set up the following equations:

1. The total number of handlebars: 2x + 3y = 122. The total number of wheels: 2x + 3y = 27 We can solve this system of equations to find the values of x and y.

Solving the System of Equations

To solve the system of equations, we can use the method of substitution or elimination. Let's use the method of elimination:

1. Multiply equation 1 by 3 and equation 2 by 2 to eliminate the y term: - Equation 1: 6x + 9y = 36 - Equation 2: 4x + 6y = 54

2. Subtract equation 2 from equation 1 to eliminate the x term: - (Equation 1) - (Equation 2): 2x + 3y = -18

3. Solve the resulting equation for y: - 2x + 3y = -18 - Rearrange the equation: 3y = -2x - 18 - Divide both sides by 3: y = (-2/3)x - 6

4. Substitute the value of y into equation 1 and solve for **