In a class 75% passed in English, 60% in Mathematics and 25% failed in both the subjects. What is the percentage who passed in both subjects?

In a class 75% passed in English, 60% in Mathematics and 25% failed in both the subjects. What is the percentage who passed in both subjects?

A 60%

B 55%

C 50%

D 45%

Solution

Correct Answer: Option A

আমরা জানি,

Total = n(A) + n(B) - Both + None

=> 100% = 75% + 60% - Both + 25%

=> 100% = 160% - Both

=> Both = 160% - 100%

=> Both = 60%