Question

В цирке выступали обезьянки на двух- и трехколесных велосипедах.Сколько было тех и других велосипедов,если всего было 8 велосипедов и 21 колесо? условие обязательно

Answer 1

Трехколесных 5 а двухколесных 3

Answer 2

Task Analysis

The task requires determining the number of two-wheeled and three-wheeled bicycles that were used by monkeys in a circus performance, given that there were a total of 8 bicycles and 21 wheels.

Given Information

The search results provide some relevant information, including the total number of bicycles and the total number of wheels.

Relevant Information from Search Results

- There were 8 bicycles and 21 wheels in total. - The bicycles included two-wheeled and three-wheeled ones.

Solution

Let's denote the number of two-wheeled bicycles as x and the number of three-wheeled bicycles as y. We can then form the following equations based on the given information: 1. x + y = 8 (total number of bicycles) 2. 2x + 3y = 21 (total number of wheels)

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

Solving the System of Equations

We can use the substitution method to solve the system of equations.

From equation (1), we have x = 8 - y. Substituting this value into equation (2), we get: 2(8 - y) + 3y = 21 Solving for y: 16 - 2y + 3y = 21 16 + y = 21 y = 21 - 16 y = 5

Substituting the value of y back into equation (1), we get: x + 5 = 8 x = 8 - 5 x = 3

Answer

So, there were 3 two-wheeled bicycles and 5 three-wheeled bicycles used in the circus performance.