A pupil՚s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is:
A. 10
B. 20
C. 40
D. 73
Answer:C
A pupil՚s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is:
A. 10 B. 20 C. 40 D. 73