Multiple Choice Questions on If the number of girls in school B is 450 then find the number of boys in school B total number of s........... for IBPS (PO/SO) Preparation

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Multiple Choice Questions

If the number of girls in school B is 450 then find the number of boys in school B total number of s...........

Data Interpretation ( IBPS PO) Case Studies
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    Direction (): Read the data given below carefully and answer the questions.
    There are two schools A & B in a town. Total number of girls in school B are 30 more than twice of total number of girls in school A. Total number of boys in school B are equal to total number of students (boys + girls) in school A.
    If the number of girls in school B is 450, then find the number of boys in school B (total number of students in school B is 180 less than twice the number of students in school A)

    630 

    Correct Answer

    420 

    Incorrect Answer

    570

    Incorrect Answer

     600

    Incorrect Answer

    480

    Incorrect Answer
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    Explanation:
    Let total number of boys in school A = a
    And total number of girls in school A = b
    So, total number of boys in school B = (a + b)
    And, total number of girls in school B = 2b + 30
    ATQ –
    2(a + b) – (a + b + 2b + 30) = 180
    2a + 2b – a – b – 2b – 30 = 180
    a – b = 210
    Given, 2b + 30 = 450
    2b = 420
    b = 210
    So, total number of boys in school A= (a) = 420
    And, total number of boys in school B = (a + b) = (420 + 210) = 630

    By: Munesh Kumari
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