In a town 65% people watched the news on television , 40% read a newspaper and 25% read a newspaper and watched the news on television also. What percent of the people neither watched the news on television nor read a news paper ? Choose the correct choice:  A) 15  B) 20  C) 25  D) 30  E) 35
n(a+b) = n(a) + n(b) - n(a*b), here + and * represents OR and AND   so n(a+b) = 65+40-25= 
<gadget id="calculator">65+40-25</gadget>
<output>80</output>
80   so 20 % people neither watched TV nor read newspaper   ANSWER:20
<result>B</result>
In a town 65% people watched the news on television , 40% read a newspaper and 25% read a newspaper and watched the news on television also. What percent of the people neither watched the news on television nor read a news paper ?