Question

what should be the minimum no of student in a class room in which 25% student score 75 marks,10% student score 85 marks,15 % student score less than 50 marks, 25% score 60 marks and remaining student score more than 90 marks..
option:
A-100
B-80
C-70
D-None of these

Answer 1

I hope option B. 80 is right answer