A wateh dealer pays 10% customs duty on a watch which costs Rs. 500 abroad. He de- sires to make a profit of 20% after giving a discount of 25% to the buyer. The marked price should be

The cost price of 27 articles is the same as the selling price of 18 articles. What is the gain percentage?

The ratio of the cost price and selling price of an article is 10 : 11. The gain per cent is:

The marked price of an article is 40% above its cost price. If its selling price is of the marked price, then the profit percentage is

While selling a watch, a shop- keeper gives a discount of 5%. If he gives a discount of 7%, he earns ₹15 less as profit. The marked price of the watch is 

4% of the selling price of an article is equal to 5% of its cost price. Again 20% of the selling price is Rs. 120 more than 22% of its cost price. The ratio of cost price & selling price is