Question

В магазин привезли 20 двух и трёх колёсных велосипедов. Сколько 2 и 3 колёсных велосипедов привезли по отдельности если всего 50 колёс?

Answer 1

2 колесный =2х
3 колесный =3х

2х +3х =50
5х=50
х=50:5
х=10

2колесных: 10
3колесных: 10
2колесных: 20 колес
3колесных: 30 колес

Answer 2

Calculating the Number of 2-Wheeled and 3-Wheeled Bicycles

To calculate the number of 2-wheeled and 3-wheeled bicycles brought to the store, we can use a system of equations. Let's denote the number of 2-wheeled bicycles as x and the number of 3-wheeled bicycles as y. We know that a 2-wheeled bicycle has 2 wheels, and a 3-wheeled bicycle has 3 wheels. The total number of wheels is given as 50.

So, we can form the following equations: 1. 2x + 3y = 50 (total number of wheels) 2. x + y = 20 (total number of bicycles)

We can solve this system of equations to find the values of x and y.

Solving the System of Equations

Let's solve the system of equations using the substitution method.

From equation 2, we can express x in terms of y: x = 20 - y

Substitute the value of x in equation 1: 2(20 - y) + 3y = 50 40 - 2y + 3y = 50 40 + y = 50 y = 10

Now that we have the value of y, we can find the value of x: x = 20 - 10 x = 10

Answer

So, the store received 10 2-wheeled bicycles and 10 3-wheeled bicycles.

Therefore, 10 2-wheeled bicycles and 10 3-wheeled bicycles were brought to the store.

This information is based on the principles of algebra and the given constraints.