The average score of 20 boys in a class is 45 and the average score of 36 students in the same class is 40. What is the average score of the girls in the class?

24.5

No worries! We‘ve got your back. Try BYJU‘S free classes today!

29.45

No worries! We‘ve got your back. Try BYJU‘S free classes today!

28.125

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 28.125
Total score of the class = 40 x 36 = 1440
Score of 20 boys of the class
= 20 x 45 = 900

Number of girls in the class = 36 - 20 = 16
Score of 16 girls in the class = 1440 - 990 = 450
∴ Average age of the girls in the class
= $\frac{450}{16}$
= 28.125

Suggest Corrections

Similar questions

Q. The average score of a class of boys and girls in an examinations is A. The ratio of boys and girls in the class is 3 : 1 if the average score of the boys is (A + 1), the average score of the girls is

A class consists of 20 boys and 30 girls. In the mid-semester examination, the average score of the girls was 5 higher than that of the boys. In the final exam, however, the average score of the girls dropped by 3 while the average score of the entire class increased by 2. The increase in the average score of the boys is

Three Science classes: A, B, and C, take a test

1. The average score in class A is 83

2. The average score in class B is 76

3. The average score in class C is 85

4. The average score of all students in classes A and B together is 79

5. The average score of all students in classes B and C together is 81

What is the average for all three classes?

Q. The average of marks scored by the students of a class is