A pupil's marks were wrongly entered as 85 instead of 33. Due to that the average marks for the class got increased by half. The number of pupils in the class is : Pick:
A) 30	B) 104	C) 20	D) 25	E) 26
Let there be x pupils in the class.   Total increase in marks = (X*1/2) = X/2.   X/2 = (85 - 33)   =&gt; X/2 = 52   =&gt; X = 104.   ANSWER:104
<result>B</result>
A pupil's marks were wrongly entered as 85 instead of 33. Due to that the average marks for the class got increased by half. The number of pupils in the class is :