Grades 11-12 Video Solutions 2012-2012_11-12

Video Transcription

Video Summary

In a Slovak class, the test results showed an average grade of 4. Boys achieved an average grade of 3.6, while girls had 4.2. When expressed in terms of the number of boys (B) and girls (G), the total grade sum becomes 3.6B + 4.2G. The combined average of 4 is calculated by dividing this sum by the total number of students (B + G). By solving this equation, it is determined that girls make up two-thirds of the class, indicating there are twice as many girls as boys.

Keywords

Slovak class

average grade

boys and girls

grade calculation

student ratio