A student 39 s marks were incorrectly entered as 94 instead of 69 Due to this error the average mark...........

Quantitative Aptitude (CHSL) Average

A student's marks were incorrectly entered as 94 instead of 69. Due to this error, the average marks of the class got increased

by 1.25. What is the number of students in the class?

This questions was previously asked in

SSC CHSL 1st June 2022 Shift-3

- Let's consider:

- Actual mark should be 69.

- Incorrect mark was 94.

- The difference due to error is 25 (94 - 69).

- The average increased by 1.25 marks due to this error.

- Let the number of students be \( n \).

- The incorrect calculation of difference divided by the number of students equals the increase in average:

\frac{25}{n} = 1.25

- Solving for \( n \):

n = \frac{25}{1.25} = 20

- Therefore, the correct option is Option 3: 20.

- Option 3: 20 is the correct choice.

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