The equivalent single discount for two successive discounts of 15% and 10% is

A single discount equivalent to two successive discounts of $$ {12{1\over 2}}{\%}$$ and 20% is

A dozen pair of socks quoted at ₹ 80 are available at a discount of 10%. How many pairs of socks can be bought for ₹24?

A trader allows a trade of 20% and a cash discount of $$6{1\over 4}\%$$% 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? 

The marked price of a T.V. is ₹16,000. After two successive discounts it is sold for ₹11,400. If the first discount is 5%, then the rate of second discount is 

 A retailer purchase 40 pens at the cost price of 36 pens from a wholeseller . If he sells all of them at a discount of 1 %, then what is his profit percent? 

While selling an article, a shopkeeper gives a discount of 5%. If he gives a discount of 7%, he earns Rs.15 less as profit. The marked price of the article is -

The marked price of an article is Rs 200. A profit of 25% is also earned by giving a discount of $$60{1\over2}\%$$ on the marked price. What is the cost price of that article?