One student's mark was wrongly entered as 73 instead of 63. Due to that the average marks for the class got increased by 1/3. What is the number of students in the class? Choose the correct choice
A) 30 B) 32 C) 35 D) 40 E) 45
Let the total number of students = a   The average marks increased by 1/3 due to an increase of   73 - 63= 
<gadget id="calculator">  73 - 63</gadget>
<output>10</output>
10 marks.   But total increase in the marks= 1/3 *x =x/3   Hence we can write as   =&gt;x/3=10   =&gt;x=30   30NSWER:30
<result>A</result>
One student's mark was wrongly entered as 73 instead of 63. Due to that the average marks for the class got increased by 1/3. What is the number of students in the class?