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Railways Sample Paper RRB (Group D) Sample Test Paper-7

  • question_answer
    A started a business with? 4500 and another person B joined after some period with? 3000. Determine this period after B joined the business if the profit at the end of the year is divided in the ratio 2 : 1

    A)  After 3 months 

    B)  After 4 months

    C)  After 6 months

    D)  after \[2\frac{1}{2}\]months

    Correct Answer: A

    Solution :

    [a] Let B joined after x months. Then, \[4500\times 12:3000\,\,(12-\,x)=2:1\] Ratio of their investments \[=\frac{4500\times 12}{3000\,\,(12-x)}=\frac{2}{1}\] \[\Rightarrow \,\,\,x=3\]


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