CMAT 2020 - Quantitative Aptitude Question 4
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Quantitative Aptitude
Let total number of people in the town = 100x
People who have both brown hair and eyes = b = 12x
=> People who have brown hair = a + b = 40x
=> a = 28x
Similarly, C = 18x
∴People who have neither brown hair nor brown eyes
= 100x - (12x + 18x + 28x) = 42%