MathematicsThe value of the machine depreciates at the rate 10% per annum.if its present value is Rs.162000.What was the value of the machine 2 years ago?

The value of the machine depreciates at the rate 10% per annum.if its present value is Rs.162000.What was the value of the machine 2 years ago?


  1. A
    Rs.100000
  2. B
    Rs.15000
  3. C
    Rs.200000
  4. D
    Rs.250000 

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    Solution:

    Concept- consider the value of the machine 2 years ago as x then find the rate for 2 years and equate it to present value find x.
    Let the value of machine 2 years ago is x
    x×90100×90100=162000
    x=162000×100×10090×90
    x=2000×100
    x=200000
    Hence, the correct option is 3
     
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