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Quantitative Aptitude

Averages

A student's m...

Question

A student's mark was wrongly entered as 86 instead of 66. Due to that the average marks for the class got increased by 1/2. What is the number of students in the class?

A

30

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B

35

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C

40

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D

50

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E

45

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Solution

The correct option is C
40

Each student's marks are increased by half, total difference in marks = 20
Number of students = 20 x 2 = 40

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