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In a certain town, 40% of people have brown hair, 30% of people have brown eyes and 12% have both brown hair and brown eyes. How many people in town have neither brown hair nor brown eyes?

In a certain town, 40% of people have brown hair, 30% of people have brown eyes and 12% have both brown hair and brown eyes. How many people in town have neither brown hair nor brown eyes? Correct Answer 42%

Calculation:

Total people = 100%

12% have both brown hair and eyes

40% have brown hair

⇒ People with only brown hair = (40 - 12) = 28%

30% have brown eyes

⇒ People with only brown eyes = (30 - 12) = 18%

∴ People with neither brown hair nor brown eyes = 100 - (28 + 18 + 12)

⇒ 100 - 58

⇒ 42%

∴ People with neither brown hair nor brown eyes are 42%.

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