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Introduction to Average

Find the numb...

Question

Find the number of students if the average score is 8 and the sum of all the scores is 72.

A

576

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B

9

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C

10

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D

12

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Solution

The correct option is B 9

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Similar questions

Q. In a class, in an examination in Mathematics,

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Q. In an examination, the maximum marks a student can score is 20 and the minimum is 12. The students score an average of 16 marks. 3 students score 18 or more. If the sum of the scores of all the students is 240, what is the maximum number of students who can score exactly 16 marks?

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 .

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. In a school the average score of all 1400 students at an examination was found to be 69.5 The average score of boys in the school was 68 and that of girls was 72 Hence the number of boys and the number of girls respectively are

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