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6th Class Mathematics Whole Numbers Question Bank Whole Numbers

  • question_answer
    There are 222 red balls in a basket. A boy takes out 6 red balls from it and replaces them by 12 white balls. He continues to do so, till all red balls are replaced by white balls. Then the number of white balls put in the basket is __________.

    A)  333                 

    B)  444                 

    C)  345                 

    D)         400

    Correct Answer: B

    Solution :

    Let n be the number of steps. According to question, \[222-6\times n=0\] \[\Rightarrow 6n=222\Rightarrow n=\frac{222}{6}=37\] Now, number of white balls added in one step = 12 \[\therefore \] Number of white balls added in 37 steps \[=12\times 37=444\]


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