Question

In a town, 45% population read magazine A, 55% read magazine B, 40% read magazine C, 30% read magazines A and B, 15% read magazines B and C, 25% read magazines A and C; and 10% read all the three magazines. What percentage do not read any magazine? 

(a) 10% (b) 15% (c) 20% (d) 25%

Answer 1

Number of population who read the magazine

= (45 + 55 + 40) – (30 + 25 +15) + 10

= 140 – 70 + 10

= 80%

Number of population who do not read magazine

= 100 – 80 = 20%