By selling a pen for Rs 105 there is a loss of 30%. At what price (in Rs) the pen must be sold in order to gain 30%?

A vacuum cleaner was marked at 30% above the cost price and a discount of 24% was given on its marked price. What is the profit/loss percentage?

By a selling basket for Rs. 19.50, a shopkeeper gains 30 %. For how much should he sell it to gain 40 %? 

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? 

Sujatha sold 75% of her goods at a profit of 24% and the remaining at a loss of 40%. What is her gain/loss percentage on the whole transaction?

A loss of 19% gets converted into a profit of 17% when the selling price is increased by Rs. 162. The cost price of the article is 

A wholesaler had 200 dozen of mangoes. He sold some of these mangoes at 20 % profit and the rest at 10 % profit, so that he made 13 % profit on selling all the mangoes. How many mangoes in dozens) did he sell at 20 % profit? 

If an item is sold for Rs. 270, there is a loss of 10 percent on it , then what will be the cost price of that item?