$A$ man buys an article for $Rs. 27.50$ and sells it for $Rs. 28.60$. Find the gain percent. (in $\%$)

The ratio of cost price and selling price of an article is $25:26$. The percent of profit will be

The $CP$ of $19$ articles is equal to the selling price $(SP)$ of $15$ articles. What is the gain percentage?

Rajesh purchased a mobile phone and a refrigerator for $Rs. 12000$ and $Rs. 10000$ respectively. She sold the refrigerator at a loss of $12\%$ and the mobile phone at a profit of $8\%$. What is her overall loss or profit?

While selling an article for $Rs. 18450$,a person suffered a loss of $50 \%$. At what price he should have sold the article (in $Rs.$) to earn a profit of $50 \%$?

An article is sold at a certain fixed price. By selling it at $\frac{2}{3}$ of that price,one loses $10 \%$. The gain percent on selling it at the original price is