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8th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    The cost of a vehicle is Rs.175000. If its value depreciates at the rate of 20% per annum, find the total depreciation after 3 years.

    A)  Rs.86400                            

    B)                         Rs.82500                            

    C)                         Rs.84500                            

    D)                         Rs.85400    

    Correct Answer: D

    Solution :

    Value of the vehicle after 3 years \[=Rs.\,\,175000\times {{\left( 1-\frac{20}{100} \right)}^{3}}\] \[=Rs.\,\,175000\times \frac{4}{5}\times \frac{4}{5}\times \frac{4}{5}\] \[=Rs.\,89600\] \[\therefore \] Total depreciation \[=Rs.\,(175000-89600)\]                 \[=Rs.\,85400\]


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