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A bookseller sells a book for Rs. 100, gaining Rs. 20. His gain per cent is A. 20% B. 25% C. 22% D. none of these |
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Answer» SP = Rs.100 Gain = Rs.20 CP = SP – Gain = 100 - 20 = Rs.80 \(Gain\%=\frac{Gain\,\times\,100}{CP}\) = \(\frac{20\,\times\,100}{80}\) = 25% |
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