Question

7. В книге 120 страниц. Рисунки занимают 35% книги. Сколько страниц занимают рисунки? 8. От мотка проволоки отрезали 122,4 м, что составляет 45%. Сколько проволоки было в мотке?

Answer 1

120*0,35=42 - страниц с рисунками
122,4:0,45=272 м - всего проволоки

Answer 2

7. 120 страниц - 100%
    х страниц - 35 %
  х = 120 * 35 : 100 = 42 страницы.

Ответ: 42 страницы занимают рисунки.

8. 122,4 м - 45%
     х м - 100%
  х = 122,4 * 100 : 45 = 272 м

Ответ: 272 м проволоки было в мотке.

Answer 3

Question 7:

The book has 120 pages, and the illustrations occupy 35% of the book. We need to calculate how many pages the illustrations occupy.

To find the number of pages occupied by the illustrations, we can use the following formula:

Number of pages occupied by illustrations = Total number of pages * Percentage of pages occupied by illustrations

Substituting the given values:

Number of pages occupied by illustrations = 120 * 0.35

Calculating this:

Number of pages occupied by illustrations = 42

Therefore, the illustrations occupy 42 pages of the book.

Question 8:

A wire was cut from a spool, and the cut length was 122.4 meters, which is 45% of the wire on the spool. We need to calculate the total length of the wire on the spool.

To find the total length of the wire on the spool, we can use the following formula:

Total length of wire on spool = Cut length / Percentage of wire cut

Substituting the given values:

Total length of wire on spool = 122.4 / 0.45

Calculating this:

Total length of wire on spool = 272 meters

Therefore, there was 272 meters of wire on the spool before it was cut.