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Previous Year Question (PYQs)
4
The average marks per student in a class of 30 students were 45. On rechecking it was found that marks had been entered wrongly in two cases. After correction these marks were increased by 24 and 34 in the two cases. The correct average marks per student are
Solution
Increase in total marks $= 24 + 34 = 58$
New average
$45 + \frac{58}{30} = 45 + 1.933 = 46.933 \approx 47$
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