The following table gives you the distribution of marks secured by some students in anexamination. 0-20 21-30 31-40 41-50 51-60 61-70 71-80 no of students: 42 38 120 84 48 36 32 Find (i) Median marks (ii) the percentage of failures, if the minimum for a pass is 35 marks. (Ans. 40.5 and 30.5)