Question

Андрей купил 3 тетради 5 центов у него осталось На 4 тетради у него не хватает 5 центов Сколько стоит одна тетрадь и сколько всего было денег？Эта второй класс,умножения и деления брать нельзя

Answer 1

Problem Analysis

Andrey bought 3 notebooks for 5 cents each, and he has 5 cents left. He needs 5 more cents to buy 4 notebooks. We need to find the cost of one notebook and the total amount of money Andrey had.

Solution

Let's assume the cost of one notebook is x cents. Andrey bought 3 notebooks for a total of 3x cents. He has 5 cents left, so the total amount of money he had is 3x + 5 cents.

Andrey needs 5 more cents to buy 4 notebooks. This means the total cost of 4 notebooks is 3x + 5 + 5 cents.

To find the cost of one notebook (x) and the total amount of money Andrey had, we can set up the following equation:

3x + 5 + 5 = 4x

Simplifying the equation:

8 = x

Therefore, the cost of one notebook is 8 cents and the total amount of money Andrey had is 3(8) + 5 = 29 cents.

Answer

The cost of one notebook is 8 cents and the total amount of money Andrey had was 29 cents.