Question

5. Реши задачи. а) В сборнике музыкальных произведений для детей 70 произве-дений: одна пятая часть всех произведений – казахстанских ав-торов, а остальные - произведения мировой классики. Сколькопроизведений мировой классики в сборнике? помогите пжпжпж ​

Answer 1

Всего-70пр.    

Казах. авторов-1/5пр., от всего

Мир. класс.-?пр.

1)-70:5*1=14(к. ав.)

2)-70-14=56(мир. к.)

Ответ: 56 произведений мировой классики.

Answer 2

Task Analysis

To solve this task, we need to determine the number of classical music compositions in a collection of 70 musical works for children. It is stated that one-fifth of the compositions are by Kazakhstani authors, while the rest are classical compositions. We need to find the number of classical compositions in the collection.

Solution

Let's denote the number of classical compositions in the collection as x. According to the information given, one-fifth of the compositions are by Kazakhstani authors. This means that four-fifths of the compositions are classical compositions.

We can set up the following equation to solve for x:

(4/5) * 70 = x

Simplifying the equation, we have:

x = (4/5) * 70

Now we can calculate the value of x.

Calculation

To find the number of classical compositions in the collection, we can use the equation:

x = (4/5) * 70

Evaluating the expression, we have:

x = (4/5) * 70 = 56

Therefore, there are 56 classical compositions in the collection of 70 musical works for children.

Answer

There are 56 classical compositions in the collection of 70 musical works for children.