In a certain exam, 65% students passed in Math and 50% passed in English. If 25% of the students have passed in both the subjects, what percent of the students have failed in both Math and English?

A 10%

B 20%

C 25%

D 30%

Correct Answer: Option A

only passed in math=(65-25)%=40% only passed in english=(50-25)%=25% total passed=(40+25+25)%=90% so,failed=100-90=10%