Correct Answer - Option 3 : 5 ∶ 7
Calculation:
The number of students who passed from Zone-K in 2017 = 360
The number of students who passed from Zone-K in 2018 = 504
Ratio = 360/504 = 5/7
∴ The ratio of the number of students who passed from Zone-K in the year 2017 compared to that in 2018 is 5 ∶ 7