Comprehension Passage
Study the following line graph which gives the number of students who joined the school and left the school in the beginning of each year during six years, from 2011 to 2016. Initial strength of school in 2010 is 3000.
The ratio of the least number of students who joined the school to the maximum number of students who left school in any of the years during the given period is:
1
7 ∶ 10
2
5 ∶ 8
3
7 ∶ 9
4
5 ∶ 7