Comprehension Passage
Direction: Study the following graph carefully to answer the questions that follows:
Students participated in different activities
What is the ratio of number of students who participated in singing and cooking activity together to those who participated in dancing activity?
1
3 ∶ 4
2
5 ∶ 7
3
2 ∶ 1
4
6 ∶ 7
5
8 ∶ 9