Direction: Study the pie chart carefully to answer the question that follows

-
What is the ratio of number of students enrolled in Singing and Dancing Classes together to those enrolled in Drama Classes respectively?
-
- 3 : 1
- 3 : 5
- 4 : 7
- 7 : 5
Correct Option: A
Required ratio = ( % of students enrolled in Singing + % of students enrolled in Dancing classes)/% of students enrolled in Drama Classes
Required ratio = (18 + 21) : 13 = 39 : 13 = 3 : 1