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    Question

    Out of a total of 120 students in a class, 50% are boys

    and the rest are girls. Out of the total number of students who appeared in the class test, 35% failed while out of the total number of boys who appeared in the test, 45% passed the test. Find the number of girls who passed the test given that all the students in the class appeared for the test.
    A 51 Correct Answer Incorrect Answer
    B 25 Correct Answer Incorrect Answer
    C 42 Correct Answer Incorrect Answer
    D 44 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ Number of boys in the class = 120 × 0.50 = 60 Number of girls in the class = 120 – 60 = 60 Number of students who failed in the test = 120 × 0.35 = 42 Number of students who passed the test = 120 – 42 = 78 Number of boys who passed the test = 60 × 0.45 = 27 Number of girls who passed the test = 78 – 27 = 51

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