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Railways Sample Paper RRB (Group D) Sample Test Paper-2

  • question_answer
    The sum of two numbers is \[15\frac{1}{3}\] and their difference is  \[4\frac{2}{3}\]   The product of the numbers is                                     

    A)  \[50\]               

    B)  \[48\frac{2}{3}\]

    C)  \[53\frac{1}{3}\]          

    D)  \[60\]

    Correct Answer: A

    Solution :

    Let the numbers are x and y. according to question \[x+y=\frac{46}{3}\]                 ... (i) \[x-y=\frac{14}{3}\]                  ? (ii) Adding eqn. (i) & (ii) \[2x=\frac{46+14}{3}\Rightarrow \frac{60}{3}\] \[\Rightarrow \,x=10\] \[10+y=\frac{46}{3}\] \[\Rightarrow y=\frac{46}{3}-\,10=\frac{16}{3}\] Product of number \[=10\times \frac{16}{3}=\frac{160}{3}=53\frac{1}{3}\]


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