Multiple Choice Questions on A fax bill costs Rs 13 for 2 minutes 30 seconds What is the cost in rupees for 3 minutes 20 seconds ........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

A fax bill costs Rs 13 for 2 minutes 30 seconds What is the cost in rupees for 3 minutes 20 seconds ...........

Quantitative Aptitude (RRB NTPC) Ratio, Proportion
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    A fax bill costs Rs. 13 for 2 minutes 30 seconds. What is the cost in rupees for 3 minutes 20 seconds? (rounded to one decimal)R

    Rs.17.3Rs

    Incorrect Answer

    Rs.17.2

    Incorrect Answer

    Rs.17.1

    Correct Answer

    Rs.17.4

    Incorrect Answer
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    Explanation:
    Fax cost for 2 min 30 seconds =13 Rs.
    For 150 sec=13 Rs.
    So for 1 sec=13/150
    Now cost for 3 min 20 sec = for 200 sec.
    =13/150 x 200=52/3= 17.33

    By: Barka Mirza
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