Multiple Choice Questions on Neeraj rsquo s earning was decreased by 60 and after that subsequently increased by 60 Find the fina........... for RRB(NTPC) Exam Preparation

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Quantitative Aptitude (RRB NTPC)

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Indian Economy - Understanding the basics of Indian economic system

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    Neeraj’s earning was decreased by 60% and after that subsequently increased by 60%. Find the final loss % on his earning?

    12%

    Incorrect Answer

    36%

    Correct Answer

    4%

    Incorrect Answer

    5%

    Incorrect Answer
    Explanation:

    We know that if a number is decreased by x% and then successively increased by y %, then the net change is given by ( - x + y + xy/100) %

    From the given data, earnings was decreased by 60%, x = 60 and subsequently increased by 60%, y = 60

    ⇒ Final loss percent = [-60 + 60 + (60 × 60)/100] = 3600/100 = 36

    Final loss on his earnings is 36%.


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