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Railways Sample Paper RRB (Group D) Sample Test Paper-15

  • question_answer
    After deducting 60% from a certain number and then deducting 15% from the remainder, 1428 is left. What was the initial number?

    A)  4200               

    B)  3962

    C)  4150   

    D)  4300

    Correct Answer: A

    Solution :

    [a] Let initial number be x. According to question, \[x\times \frac{40}{100}\times \frac{85}{100}=1428\] .\[\therefore \,\,\,x=\frac{1428\times 100\times 100}{40\times 85}=4200.\]


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