13 articles were bought for Rs. 5980 and sold for Rs 6656. How much was the approximate profit percentage per article?

The cost price of an article is 480. If it is to be sold at a profit of 6.25 %, how much would be its selling price? 

What would be the printed price of a wallclock purchased at ₹380, so that after giving 5 % discount, there is 25 % profit? 

By selling a table for Rs. 350 instead of Rs. 400, loss percent increases by 5%. The cost price of table is : 

If the ratio of selling price and cost price is 4:5 respectively, then what is the loss percentage?

Naresh purchased a TV set for Rs. 11,250 after getting a discount of 10 % on the labeled price. He spent Rs. 150 on transport and Rs. 800 on installation. At what price should it be sold so that the profit earned would have been 15 % if no discount was offered? 

Prakash, Sunil and Anil started a business jointly investing Rs. 11 lakhs, Rs. 16.5 lakhs and Rs 8.25 lakhs respectively. The profit earned by them in the business at the end of three years was Rs. 19.5 lakhs. What will be the 50% of Anil's share in the profit? 

The price of 6 pencils is Rs. 30 and that of 12 pens is Rs. 120. What is the average price of 50 pencils and 50 pens?