Answer C:
X- total students
Question: 30% of 60% boys - reading telegraph: 18%of X
similarly, total girls reading telegraph: 22% of X
Statement 1: No info about girls given:
Only states: 40% of 18% of X (7.2% of X) reads cartoons
Insuff
Statement 2: No info about boys given:
States: 60% of 22% of X reads gossip
Insuff
Combining - you get an answer
7.2% + 13.2% of X
X- total students
Question: 30% of 60% boys - reading telegraph: 18%of X
similarly, total girls reading telegraph: 22% of X
Statement 1: No info about girls given:
Only states: 40% of 18% of X (7.2% of X) reads cartoons
Insuff
Statement 2: No info about boys given:
States: 60% of 22% of X reads gossip
Insuff
Combining - you get an answer
7.2% + 13.2% of X
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