A student's mark was wrongly entered as 83 instead of 63. due to that the average marks for the class got increased by half 1/2. what is the number of students in the class
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Answer: 40
Explanation:
Let there be x students in the class.
Total increase in marks = [x x1 ] =x 22
x = (83 - 63) x = 20 x= 40. 22
Explanation:
Let there be x students in the class.
Total increase in marks = [x x1 ] =x 22
x = (83 - 63) x = 20 x= 40. 22
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