Comprehension Passage
Direction - Study the bar graph and answer the following questions carefully
Bar chart given below shows students registered for three different exams Bank, SSC and Railway in five difference years.
Find the ratio of total students registered for all the three exams in 2015 and 2016 together to total students registered for all the three exams in 2017 and 2018?
1
2 : 3
2
5 : 4
3
4 : 5
4
3 : 2
5
None of these