Multiple Choice Questions on In a class of 40 students the number of boys is 4 more than the number of girls The average weight o........... for IBPS(Clerical) Exam Preparation

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Multiple Choice Questions

In a class of 40 students the number of boys is 4 more than the number of girls The average weight o...........

Quantitative Aptitude(IBPS CL) Average
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    In a class of 40 students, the number of boys is 4 more than the number of girls. The average weight of the entire class is 48.4 KGs. If the average weight of girls is 44 KGs, what is the average weight of boys?

    50kg

    Incorrect Answer

    51kg

    Incorrect Answer

    52kg

    Correct Answer

    53kg

    Incorrect Answer

     None of these

    Incorrect Answer
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    Explanation:

    Number of girls=x Boys= x+4 x+x+4=40

    So girls= 18

    Boys= 22

    Apply alligation method for fast calculations:

    Girls(avg wt)         Boys(avg wt)

    44                         ?

                 48.4

    18            :             22         

    9 : 11

    so, ?=48.4 + (48.4-44)/(11*9)= 48.4+3.6=52 kg

    By: Munesh Kumari
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