MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Making Comparison Based on Average

The average s...

Question

The average score of two sections is 28. The average score of section A is 30, in which there are 25 students, If there are 20 students in section B then the average score of section B is

A

25.5

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

B

27.5

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

C

29

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

D

33

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

Open in App

Solution

The correct option is A 25.5
Total number of students in section A and B = 25 + 20 = 45
Average score of both the sections = 28
$∴$ Total score of both the sections = 28 x 45 = 1260
Total score of section A = 25 x 30 = 750
Let the average score of section B = x
Then, total score of section B = 20x
Given, 20x + 750 = 1260
$\Rightarrow 20 x = 510$
$\Rightarrow x = 25.5$

Suggest Corrections

thumbs-up

0

Similar questions

Q. The average marks scored in maths by the students of section A is 46, whereas that by students of section B is 38. If a student from section A gets shifted to section B and the average score of both the sections increase, which of these could be the marks scored by that student?

Q. A class has two section in one of which there are 40 students with an average age of 14.5 years. The average of the class is 14.2 years. If there are 32 students in the other section, then its average age is

Q. There are 70 boys and 30 girls in a class. The average score of boys is 75. The average score of 100 students is 72. The average score of girls is .

Q. There are two sections in a class. A test was conducted in both these sections. The average marks of the first section is 60 and that of the second section is 50. If the overall average of the entire class spanning these two sections is 54 and the number of students in the first section is 24, then what is the number of students in the second section?

Q. The average of the scores of a group of students in a test was

52

. The brightest

20 %

of them secured an average score of

80

and the dullest

25 %

secured an average score of

31

. Then the average score of remaining

55 %

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Making Comparison Based on Average

Standard VI Mathematics

Join BYJU'S Learning Program

CrossIcon