Comprehension Passage
Direction: Answer Questions based on the following data and with the help of the given figure.
A = 30, represents total number of students in class studying Physics.
B = ?, represents total number of students studying Chemistry.
C = 40, represents total number of students studying Mathematics.
12 Students are studying Physics and Chemistry but not Mathematics.
16 Students are studying Chemistry and Mathematics but not Physics.
4 Students are studying Physics, Chemistry and Mathematics.
What is the ratio of number of students studying only Physics to the number of students studying only Mathematics ?
1
0.3
2
0.4
3
0.5
4
0.6