Question

Две тетради стоят столько же, сколько 3 карандаша, а 6 карандашей - столько же, сколько 5 ручек. Алеша купил 15 ручек. Сколько тетрадей он мог бы купить за те же деньги?

Answer 1

Алеша купил 15 ручек. На эти деньги он мог бы купить 18 карандашей, т.к. каждые 5 ручек равны 6 карандашам по стоимости (15:5*6=18). Вместо 18 карандашей он мог бы купить 12 тетрадей (каждые 3 карандаша равны 2 тетрадям, т.е. 18:3*2=12)

Answer 2

ответ: 6 терадей..................................

Answer 3

Problem Analysis

The problem states that two notebooks cost the same as three pencils, and six pencils cost the same as five pens. Alesha bought 15 pens, and we need to determine how many notebooks he could buy with the same amount of money.

Solution

Let's break down the problem step by step:

1. Two notebooks cost the same as three pencils. 2. Six pencils cost the same as five pens. 3. Alesha bought 15 pens.

To find out how many notebooks Alesha could buy with the same amount of money, we need to determine the value of one notebook in terms of pens.

Let's assume the cost of one notebook is x pens.

According to the given information: - Two notebooks cost the same as three pencils, which can be written as: 2x = 3. - Six pencils cost the same as five pens, which can be written as: 6 = 5x.

We can solve these two equations to find the value of x.

Solving the Equations

From the first equation, we can solve for x: 2x = 3 Dividing both sides by 2: x = 3/2 Simplifying: x = 1.5

Now we know that one notebook is equal to 1.5 pens.

Calculating the Number of Notebooks

Alesha bought 15 pens, and we need to determine how many notebooks he could buy with the same amount of money.

Since one notebook is equal to 1.5 pens, we can calculate the number of notebooks Alesha could buy by dividing the number of pens he bought by the value of one notebook:

Number of notebooks = Number of pens / Value of one notebook Number of notebooks = 15 / 1.5 Number of notebooks = 10

Therefore, Alesha could buy 10 notebooks with the same amount of money.

Answer

Alesha could buy 10 notebooks with the same amount of money.