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Quantitative Aptitude (CHSL)

Title

45:30

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Indian Economy - Understanding the basics of Indian economic system

In a class, there are 29 boys and 21 girls. The average score of boys in Maths is 89, whereas the average score of girls in maths

is 91. What is the average of the whole class in maths?

This questions was previously asked in

SSC CHSL 24th May 2022 Shift-1

91.84

89.84

- In the class, 29 boys have an average Maths score of 89.

- The 21 girls in the class have an average Maths score of 91.

- To find the class average, calculate the weighted average of boys and girls scores.

- Boys' total score = 29 boys * 89 = 2581

- Girls' total score = 21 girls * 91 = 1911

- Total class score = 2581 + 1911 = 4492

- Total number of students = 29 boys + 21 girls = 50

- Class average = Total score / Total students = 4492 / 50 = 89.84

- The correct answer is Option 4: 89.84