In an examination the Average marks of 7 children was 20 that of 3 children was 45 that of another 4...........

Quantitative Aptitude (CHSL) Average

In an examination, the Average marks of 7 children was 20, that of 3 children was 45, that of another 4 children was 15 and that

of 2 children was 0. What is the average marks of all the 16 children? (Correct to one decimal place)

This questions was previously asked in

SSC CHSL 10th June 2022 Shift-1

20.9

4.9

- To find the average marks of all 16 children, we first calculate the total marks for each group.

- For 7 children with an average of 20: Total = 7 * 20 = 140

- For 3 children with an average of 45: Total = 3 * 45 = 135

- For 4 children with an average of 15: Total = 4 * 15 = 60

- For 2 children with an average of 0: Total = 2 * 0 = 0

- The overall total marks for all 16 children = 140 + 135 + 60 + 0 = 335

- Average of all 16 children = Total marks / Number of children = 335 / 16 = 20.9

- Option:2 - 20.9 is the correct answer.

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