New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The total strength of school A is 20% more than that of

    school B. In school A and B, out of total number of students, 30% and 40% respectively are girls. The number of boys in school A is how much percent more/less than that in school B?
    A 55% Correct Answer Incorrect Answer
    B 60% Correct Answer Incorrect Answer
    C 50% Correct Answer Incorrect Answer
    D 40% Correct Answer Incorrect Answer
    E 50% Correct Answer Incorrect Answer

    Solution

    Let the total number of students in school B be ‘x’. Therefore, total number of students in school A = 1.2x Number of boys in school A = 0.70 × 1.2x = 0.84x Number of boys in school B = 0.6x Required % = [(0.84x – 0.6x)/0.6x] × 100 = 40%

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