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The present value of an optical instru...

The present value of an optical instrument is Rs. 20000. If its value will depreciate 5% in the first year, 4% in the second year and 2% in the third year, what will be its value after 3 years? `R s .16534.5` b. `R s .16756.5` c. `R s .17556.8` d. `R s .17875.2`

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