In an examination, 25% of total students failed in Hindi, 35% failed in English and 40% in both. The percentage of these who passed in both the subjects is : Choose the correct choice from the following answers:
A) 10%  B) 20%  C) 60%  D) 80%  E) 50%
pass percentage = 100 - (25+35-40) = 100-20= 
<gadget id="calculator">100-20</gadget>
<output>80</output>
80   ANSWER:80%
<result>D</result>
In an examination, 25% of total students failed in Hindi, 35% failed in English and 40% in both. The percentage of these who passed in both the subjects is :