In a class 70% of the students pass in Hindi and 50% in Mathematics. 20% fail in both. What % of students pass in both? ( ADP COMPANY)

In a class 70% of the students pass in Hindi and 50% in Mathematics. 2

1.	In a class 70% of the students pass in Hindi and 50% in Mathematics. 20% fail in both. What % of students pass in both? ( ADP COMPANY)
A.	0.4
B.	0.8
C.	0.6
D.	0.5
Answer» B. 0.8