In an examination 75% of the students passed in mathematics, 45% passed in general science and 30% passed in both subject. What per cent of the students have failed in both subject?

A 35
B 25
C 10
D 15

Correct Answer: 10

Percentage of pass in total = Percentage of pass in Bangla + Percentage of pass in English - Percentage of pass in both = 75 + 45 - 30 = 90 So, percentage of fail = 100 - 90 = 10
Bissoy MCQ
#গণিত #সেট (Set) #Bangladesh Development Bank Ltd #Bangladesh Development Bank Ltd - Senior Officer - 03.06.2011

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