Question

Составьте задачи по кратким записям.Если возможно решите двумя способами 1кника.....?рублей 400книг.....36000рублей 200книг.....?рублей

Answer 1

1)36000:400=90-одна книга
2)90*200=18000-200книг

Answer 2

Problem Statement:

Let's say we have three scenarios involving the purchase of books:

1. The cost of 1 book is unknown, and the total cost of 400 books is 36,000 rubles. 2. The cost of 1 book is unknown, and the total cost of 200 books is also unknown.

We need to find the cost of 1 book in each scenario.

Solution 1: Using Algebraic Equations

Let's represent the cost of 1 book as 'x' rubles.

In the first scenario, we know that the total cost of 400 books is 36,000 rubles. We can set up the following equation to solve for 'x':

400x = 36,000

To find the value of 'x', we divide both sides of the equation by 400:

x = 36,000 / 400

Simplifying the equation gives us:

x = 90

Therefore, the cost of 1 book in the first scenario is 90 rubles.

In the second scenario, we know that the total cost of 200 books is unknown. Let's represent the total cost as 'y' rubles. We can set up the following equation:

200x = y

Since we don't have enough information to solve for 'x' or 'y', we cannot determine the cost of 1 book in the second scenario.

Solution 2: Using Proportions

In the first scenario, we can set up a proportion to find the cost of 1 book:

400 books / 36,000 rubles = 1 book / x rubles

Cross-multiplying the proportion gives us:

400x = 36,000

Following the same steps as in Solution 1, we find that the cost of 1 book in the first scenario is 90 rubles.

In the second scenario, we don't have enough information to set up a proportion and find the cost of 1 book.

Summary:

To summarize, the cost of 1 book in the first scenario is 90 rubles, based on both algebraic equations and proportions. However, we cannot determine the cost of 1 book in the second scenario due to insufficient information.