$X$ sells two articles for $Rs. 4,000$ each with no loss and no gain in the transaction. If one was sold at a gain of $25\%$, the other is sold at a loss of ........$\%$.

Two successive discounts of $4 \%$ on any item are equivalent to a single discount of $\%$

Arun buys one kilogram of apples for $Rs. 120$ and sells it to Swati gaining $25\%$. Swati sells it to Divya who again sells it for $Rs. 198$,making a profit of $10\%$. What is the profit percentage made by Swati (in $\%$)?

By selling an article at $\frac{2}{5}$ of the marked price,there is a loss of $25 \%$. The ratio of the marked price and the cost price of the article is

By selling an article for $Rs. 144$,a person gained such that the percentage gain equals the cost price of the article. The cost price of the article is (in $Rs.$):

$A$ shopkeeper earns a profit of $12 \%$ on selling a book at $10 \%$ discount on the printed price. The ratio of the cost price and the printed price of the book is