In an examination, 34% of total students failed in Hindi, 44% failed in English and 22% in both. The percentage of these who passed in both the subjects is :
Options:
A) 23
B) 37
C) 28
D) 44
E) 81
Explanation:   Formula n(aâˆªb) = n(a) + n(b) âˆ’ n(aâˆ©b)   Fail in Hindi or English = 34 + 44 â€“ 22 = 56   Therefore students who passed = 100 â€“ 56 = 44.   Answer: 44
<result>D</result>
In an examination, 34% of total students failed in Hindi, 44% failed in English and 22% in both. The percentage of these who passed in both the subjects is :