Question

5.За два вида тетрадей заплатили 96 рублей. Стоимость тетради одного вида-30%, а другого-40% потраченных денег. На сколько один вид тетрадей дешевле другого? Пожалуйста помогите срочно!!!

Answer 1

30%=0,3
40%=0,4
1) 96*0,3=28,8(руб)-1 вид тетрадей
2) 28,8*0,4=11,52(руб)-2 вид тетрадей
3) 28,8-11,52=17,28(руб)
Ответ: На 17,28 руб 2 вид дешевле.

Answer 2

Problem Analysis

We are given that the total cost of two types of notebooks is 96 rubles. The cost of one type of notebook is 30% of the total spent, and the cost of the other type is 40% of the total spent. We need to determine the price difference between the two types of notebooks.

Solution

Let's assume the cost of the first type of notebook is x rubles. Then the cost of the second type of notebook would be (96 - x) rubles.

According to the given information, the cost of the first type of notebook is 30% of the total spent, and the cost of the second type is 40% of the total spent. We can set up the following equation:

x = 0.3 * 96 (96 - x) = 0.4 * 96

Now we can solve this system of equations to find the values of x and (96 - x).

Calculation

Let's calculate the values of x and (96 - x) using the equations mentioned above.

x = 0.3 * 96 = 28.8 rubles (96 - x) = 0.4 * 96 = 38.4 rubles

Answer

The first type of notebook is cheaper by 9.6 rubles compared to the second type.