Current location - Training Enrollment Network - Mathematics courses - The total average score and the average score of men and women in the math test of Olympic Mathematics are several times that of women.
The total average score and the average score of men and women in the math test of Olympic Mathematics are several times that of women.
The total average score is 78, and the average score of boys is 77, which means that each boy gets 78-77= 1 and gives it to girls.
The average score is 78, and the average score of girls is 8 1, that is, each girl gets 8 1-78 = 3 points. How many boys do you need to get these three points from?
(8 1-78)/(78-77)=3
In other words, boys are three times as many as girls.