Question

Илья не может купить 8 тетрадей у него не хватает 28 рублей . Если он купит 6 тетрадей то у него останется 2 рубля . Сколько денег у Ильи ??

Answer 1

8x-28=6x+2
8x-6x=2+28
2x=30
x=30:2
x=15 руб стоит одна тетрадь
8*15-28=120-28=92руб у Ильи

Answer 2

Solution:

Let's solve this problem step by step.

1. Let's assume the cost of each notebook is x rubles and the total number of notebooks Ilya wants to buy is 8.

2. According to the given information, Ilya is short of 28 rubles to buy 8 notebooks. This can be represented by the equation: 8x - 28 = ? 3. If Ilya buys 6 notebooks, he will have 2 rubles left. This can be represented by the equation: 6x + 2 = ?

Calculation:

Let's solve the above equations to find the value of x and then calculate the total amount of money Ilya has.

First, let's solve the equation 8x - 28 = ? to find the value of x.

8x - 28 = ? 8x = 28 x = 28 / 8 x = 3.5

Now, we have the value of x as 3.5 rubles.

Next, let's calculate the total amount of money Ilya has.

If Ilya buys 6 notebooks at 3.5 rubles each, the total cost would be: 6 * 3.5 = 21 rubles

Therefore, Ilya has 21 rubles.

So, Ilya has 21 rubles.

I hope this helps! If you have any other questions, feel free to ask!