Question

В классе 20 учеников. Каждому ученику купили тетрадь, ручку и линейку. Сколько заплатили за все тетради, за все ручки, за в се линейки? Ручка-цена 45 тенге, стоимость-? Тетрадка-16 тенге, количество-20 штук, стоимость-? Линейка-40тенге, стоимость-? За какие товары заплатили больше всего денег? Составь выражение к задаче и реши ее. Помогите пожалуста!

Answer 1

Ручка-45*20=900тенге
Тетрадь-16*20=320тенге
Линейка-40*20=800тенге
За ручку заплатили больше всего денег

Answer 2

Task Analysis and Expression Setup

To solve this problem, we need to calculate the total cost of notebooks, pens, and rulers for 20 students. Then, we'll determine which item had the highest total cost. Let's set up the expression to solve this problem.

Let's denote: - Cost of a pen as P (45 tenge) - Cost of a notebook as N (16 tenge) - Cost of a ruler as R (40 tenge) - Number of students as S (20)

The expression to calculate the total cost for each item is: Total cost of pens = P * S Total cost of notebooks = N * S Total cost of rulers = R * S

Calculation

Now, let's calculate the total cost for each item and determine which item had the highest total cost.