There are 20 boys ,10 girls in class 10 in a school. The mean of 20 boys is 35 . The men of 10 girls is 40 . Find the mean of total class
Answers
Mean of the total class = 36.67
Explanation:
Given: There are 20 boys and 10 girls in Class X in a school. The mean of 20 boys is 35. The mean of 10 girls is 40.
To find: Mean of total class.
Solution:
Number of boys in the class = 20
Number of girls in the class = 10
Total number of students in the class = 20 + 10 = 30
Mean of boys = boys total / 20 = 35
Mean of girls = girls total / 10 = 40
Boys total = 35 * 20 = 700
Girls total = 10 * 40 = 400
So Class total = 700 + 400 = 1100
Mean of the total class = class total / class strength = 1100 / 30 = 36.67
Mean of total class = 36.67 (Approx)
Explanation:
Given:
Mean of 20 boys = 35
Mean of 10 girls = 40
Find:
Mean of total class
Computation:
Total of boys = 20 × 35
Total of boys = 700
Total of Girls = 10 × 40
Total of boys = 400
Total of class = 700 + 400+
Total of class = 1100
Mean of total class = 1100 / (20+10)
Mean of total class = 36.67 (Approx)
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