There are 120 students in a class, who read Maths or History or English. It is known that no student can read all three subjects. 24 read only Maths and History, 8 read only History and English and 21 read only Maths and English. 32 read only Maths and 13 only History. If 9 of the students who read only Maths start to read all three subjects, then find the percentage of students who read History?
1
50%
2
60%
3
40%
4
None of these