In an examination, 35% of total students failed in Hindi, 45% failed in English and 20% in both. The percentage of these who passed in both the subjects is :	Choose the most appropriate option:  A) 10%  B) 20%  C) 30%  D) 40%  E) 50%
pass percentage = 100 - (35+45-20) = 100-60= 
<gadget id="calculator">100-60</gadget>
<output>40</output>
40   ANSWER:40%
<result>D</result>
In an examination, 35% of total students failed in Hindi, 45% failed in English and 20% in both. The percentage of these who passed in both the subjects is :