1) If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is : A) Rs. 50 B) Rs. 160 C) Rs. 200 D) Rs. 225 E) Rs. 250 Answer: Option CExplanation:Let C.P be Rs. $x$. Then, $5$% of $x=(350-340)$ $=10\Rightarrow \frac{x}{20}=10$ $\Rightarrow x = 200$