Question

В классе 30 учеников. На урок изобразительного искусства краски принесли 18 учеников, а карандаши 20 учеников. Сколько учеников принесли на урок и карандаши, и краски?

Answer 1

Ответ:8 учеников принесли краски и карандаши

Answer 2

1)20 +18 =38 2)38-30=8 Ответ:8

Answer 3

Calculating the Total Number of Students Bringing Paints and Pencils to Art Class

In the class of 30 students, 18 students brought paints, and 20 students brought pencils to the art class.

To find out how many students brought both paints and pencils, we can use the principle of inclusion-exclusion.

Total students bringing paints or pencils = Total students bringing paints + Total students bringing pencils - Total students bringing both paints and pencils

Total students bringing both paints and pencils = Total students bringing paints + Total students bringing pencils - Total students bringing paints or pencils

Let's calculate the total number of students bringing both paints and pencils.

Calculation

Total students bringing both paints and pencils = 18 (students bringing paints) + 20 (students bringing pencils) - Total students bringing both paints and pencils

Total students bringing both paints and pencils = 18 + 20 - 30

Total students bringing both paints and pencils = 8

Therefore, 8 students brought both paints and pencils to the art class.