the price of a book is depreciated by one-fifth in a year.find the rate of depreciation.
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Given :- The price of a book is depreciated by one-fifth in a year. find the rate of depreciation. ?
Solution :-
Let us assume that , the price of a book is Rs . x .
now,
→ Original Price of book = Rs. x
→ Price depreciated in a year = (1/5) of original Price = (1/5) of x = Rs. (x/5)
therefore,
→ Rate of depreciation = (Decreased Price * 100) / Original Price = {(x/5) * 100)} / x = (x * 100) / (5 * x) = 20% . (Ans.)
Hence, Rate of depreciation is 20% .
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