7. Bar graph of students attendance

In a college, the Commerce department collected a report of student's attendance percentage of an academic year as below. Observe the bar graph and answer the questions.

 

 

i) What is the range of attendance percentage minimum students have? 85-9075-8061-6566-70$\%$

  

ii) How many students have attendance more than 80 percentage?

 

iii) If the college administration decides to give an extra $5$ marks as an appreciation to the students who has a attendance percentage more than $90\%$, how many students would get that extra mark?