If I would have purchased 11 articles for Rs.10 and sold all the 10 articles at the rate of Rs.11, the profit percent would have been :A10%B11%C21%D100%Answer: C. 21%Read Explanation:11 articles for Rs.10 CP of 1 article = 10/11 Sold 10 articles for Rs.11 SP of 1 article = 11/10 Profit% = SP-CP/CP x 100=1110−10111011×100=\frac{\frac{11}{10}-\frac{10}{11}}{\frac{10}{11}}\times{100}=11101011−1110×100=121−1001101011×100=\frac{\frac{121-100}{110}}{\frac{10}{11}}\times{100}=1110110121−100×100=21110×1110×100=\frac{21}{110}\times{\frac{11}{10}}\times{100}=11021×1011×100= 21% Open explanation in App