The marked price of a clock is $Rs.\,3200.$ It is to be sold at $Rs$ $2448$ at two successive discounts. If the first discount is $10 \%$, then the second discount is.........$\%$

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.

Raman sells a machine for $Rs.\, 39$ lakh at a loss. Had he sold it for $Rs.\, 49$ lakh, his gain would nhave been three times the loss. What is the cost price of the machine? (in $Rs........lakh$)

A trader allows a trade discount of $20 \%$ and a cash discount of $6 \frac{1}{4} \%$ on the marked price of the goods and gets a net gain of $20 \%$ of the cost. By how much above the cost should the goods be marked for the sale? (in $\%$)

At a village trade fair a man buys a horse and a camel together for $Rs.$ $51,250 .$ He sold the horse at a profit of $25 \%$ and the camel at a loss of $20 \% .$ If he sold both the animals at the same price, then the cost price of the cheaper animal was $Rs.$.........

A dealer fixed the price of an article $40 \%$ above the cost of production. While selling it he allows a discount of $20 \%$ and makes a profit of $Rs.\, 48$. The cost of production (in $Rs.$) of the article is