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    Question

    The ratio of males and females in a zoo is 5:6

    respectively and the percentage of children among males and the percentage of children among females are 15% and 20% respectively. If the number of adult females in the zoo is 4320 then what will be the total population in a zoo?
    A 8440 Correct Answer Incorrect Answer
    B 9900 Correct Answer Incorrect Answer
    C 10400 Correct Answer Incorrect Answer
    D 7700 Correct Answer Incorrect Answer

    Solution

    Let the number of males and females be 5x and 6x respectively. Percentage of children among females = 20% So, 80% of females are adults, => 80/100×6x = 4320 => 6x = 5400 => x = 900 Total population = 5x + 6x = 11x = 11 ×900 = 9900

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