An article which is marked at $Rs.\, 975$ is sold for $Rs.\, 897$. The $\%$ discount is?

Seema purchased an item for $Rs.\, 9600$ and sold it for loss of $5$ percent. From that money she purchased another item and sold it for gain of $5$ percent. What is her overall gain/loss?

A wholesaler had $200$ dozens of mangoes. He sold some of these mangoes at $20 \%$ profit and the rest at $10 \%$ profit, so that he made $13 \%$ profit on selling all the mangoes. How many mangoes (in dozens) did he sells at $20 \%$ profit?

A manufacturer sells an article to a wholesale dealer at a profit of $20 \%$. The wholesale dealer sells it to a retail merchant at a loss of $5 \% .$ Find out the resultant profit or loss.

The marked price of a watch was $Rs.\, 720 .$ A man bought the same for $Rs.\, 550.80$ after getting two successive discounts, the first being $10 \% .$ What was the second discount rate? (in $\%$)

Three successive discounts of $10 \%, 12 \%$ and $15 \%$ will amount to a single discount of in $\%$?