A) 8
B) 10
C) 18
D) 20
Correct Answer: D
Solution :
[d] Let printed rate of the article = Rs. x \[\therefore \] Cost price of the article \[=\text{Rs}.\,\,\frac{9x}{10}\] and selling price of an article \[=x+x\times \frac{8}{100}=x+\frac{2x}{25}=\text{Rs}.\,\,\frac{27x}{25}\] \[\therefore \] Gain percentage\[=\frac{\left( \frac{27x}{25}-\frac{9x}{10} \right)\times 100}{\frac{9x}{10}}%\] \[=\frac{\frac{9x}{50}}{\frac{9x}{10}}\times 100%=20%\] |
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