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ATQ, Let number of men who likes 'Tea' be '9a' So, number of men who likes 'coffee' = 9a × (4/3) = '12a' And number of women who likes 'coffee' = 12a × (1/3) = '4a' So, number of women who likes 'Tea' = 9a ÷ 0.6 = '15a' So, number of people who likes 'Tea' = '24a' and number of people who likes 'Coffee' = '16a' 24a + 16a = 400 Or, 40a = 400 Or, 'a' = 10 And number of men in the office were = 9a + 12a = 21a = 21 × 10 = 210
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