A pupil's marks were wrongly entered as 35 instead of 23. 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) 80	C) 20	D) 25	E) 24
Let there be x pupils in the class.   Total increase in marks = (X*1/2) = X/2.   X/2 = (35 - 23)   =&gt; X/2 = 12   =&gt; X = 24.   ANSW24R:24
<result>E</result>
A pupil's marks were wrongly entered as 35 instead of 23. Due to that the average marks for the class got increased by half. The number of pupils in the class is :