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    Question

    In a college the ratio of boys and girls are in the

    ratio 7:9. 65% girls and 40% boys were absent. Find the girls present if the total number of students in a college were 320.
    A 60 Correct Answer Incorrect Answer
    B 64 Correct Answer Incorrect Answer
    C 68 Correct Answer Incorrect Answer
    D 45 Correct Answer Incorrect Answer
    E 63 Correct Answer Incorrect Answer

    Solution

    Boy: Girl = 7:9 Total number of students = 320 Number of Boys = (7/16) × 320 = 140 Number of Girls = (9/16) × 320 = 180 Number of girls absent = 65% × 180 = 117 Number of boys absent = 40% × 140 = 56 Total number of girls present = 180 – 117 = 63

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