The value of a machine depreciates at the rate of 10% per annum . It was purchased 3 years ago . If its present value is Rs.291600, for how much was it purchased? please give answer fast.

We have to find the cost at which the machine was purchased 3 years ago.

We have,

Amount after the given time interval,(A)=Rs.291600

TIme,(t)=3 years

Rate of interest,(r)=10% per annum.

Therefore,

So,

Therefore,cost at which the machine was purchased 3 years ago is Rs. 4,00,000

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