A student's mark was wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by \(\dfrac12\). What is the number of students in the class?
A.45
B.40
C.35
D.30
Answer:B
A student's mark was wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by \(\dfrac12\). What is the number of students in the class?
A.45 B.40 C.35 D.30