Question
Out of 1200 people in a city, 40% speak Mandarin and the
rest speak Cantonese. If out of non-Mandarin speakers, 35% are males and out of Mandarin speakers 200 are males, then find the number of males in the city.Solution
ATQ, Number of people who speak Mandarin = 1200 × 0.4 = 480 Number of people who speak Cantonese = 1200 – 480 = 720 Number of males who do not speak Mandarin = 720 × 0.35 = 252 Number of males who speak Mandarin = 200 Total number of males in the city = 200 + 252 = 452
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