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In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes? Correct Answer 45

Percentage of people having atleast one of the qualities = 40% + 25% - 10% = 55%   Percentage of people having neither of the qualities = 100% - 55% =  45%

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The correct sequence should be