Question

В магазине выставили 45 обычных велосипедов. Их оказалось на 36 больше, чем горных, но на 28 меньше, чем гоночных. Сколько спортивных велосипедов было в магазине, если горные, и гоночные велосипеды предназначены для соревнований?

Answer 1

Формула ;
a = 45
b =?
d=?
______________
Решение ;
1. 45 - 36= 9 (в.) - горных .
2. 45 + 28 = 73 (в.) - гоночных .
3. 73 + 9 = 82 (в.) - спортивных.
Ответ; 82 велосипеда .

Answer 2

Problem Analysis

To solve this problem, we need to determine the number of sport bicycles in the store. We are given the following information: - There are 45 regular bicycles in the store. - The number of regular bicycles is 36 more than the number of mountain bicycles. - The number of regular bicycles is 28 less than the number of racing bicycles.

Let's denote the number of mountain bicycles as M, the number of racing bicycles as R, and the number of sport bicycles as S. We can set up the following equations based on the given information:

1. The number of regular bicycles is 36 more than the number of mountain bicycles: Regular bicycles = Mountain bicycles + 36 Equation 1: R = M + 36

2. The number of regular bicycles is 28 less than the number of racing bicycles: Regular bicycles = Racing bicycles - 28 Equation 2: R = S - 28

We need to find the value of S, the number of sport bicycles in the store.

Solving the Equations

To solve the equations, we can substitute Equation 1 into Equation 2 to eliminate R:

M + 36 = S - 28

Rearranging the equation:

S = M + 36 + 28 S = M + 64

Now, we have an equation relating the number of sport bicycles (S) to the number of mountain bicycles (M).

Conclusion

Based on the given information, the number of sport bicycles in the store is equal to the number of mountain bicycles plus 64.

Let's calculate the value of S:

S = M + 64

Unfortunately, we don't have the value of M, so we cannot determine the exact number of sport bicycles without additional information.