A fan is listed at $Rs.\, 1500$ and a discount of $20 \%$ is offered on the list price. What additional discount must be offered to the customer to bring the net price to $Rs$ $1104 ?$ (in $\%$)

Arun purchased $30\, kg$ of wheat at the rate of $Rs.\,11.50$ per $kg$ and $20\, kg$ of wheat at the rate of $Rs.\,14.25$ per $kg$. He mixed the two and sold the mixture. Approximately at what price per $kg$ should he sell the mixture to make $30 \%$ profit? (in $Rs.$)

A dealer buys a table listed at $Rs.\, 600$ and gets successive discount of $10 \%$ and $20 \% .$ What is his profit or loss percent if he sells at $Rs.$ $540 ?$

Profit earned by selling an article of $Rs.\, 1630$ is same as the loss incurred by selling the article for $Rs.$ $1320 .$ What is the $CP$ in $Rs$?

The price of an article is raised by $30 \%$ and then two successive discount of $10 \%$ each are allowed. Ultimately, the price of the article is

A man bought $15$ mangoes for a rupee. How many mangoes were sold for a rupee so that there is a loss of $25 \% ?$