A fan s listed at ₹ 150 with a discount of 20%. What additional discount must be offered to the customer to bring the net price to ₹ 108

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? 

How much percent above the cost price should a shopkeeper mark his goods so as to earn a profit of 32% after allowing a discount of 12% on the marked price? 

A shopkeeper list the price of an article as ₹ 500. But he gives a certain discount which allows the buyer to pay ₹ 500 for the article including 10% sales tax. The rate of discount is 

Rahim bought a T.V. with 20% discount on list price. Had he bought it with 25% discount he would have saved ₹ 500. At what price did he buy the T.V?  

A shopkeeper marks the price of an item keeping 20% profit. If he offers a discount of $$12{1\over 2}\%$$ on the marked price, his gain percent will be 

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

The difference between a discount of 30% on ₹ 2,000 and two successive discounts of 25% and 5% on the same amount is