If Nanda sold and article ar Rs 40 and earned 100% profit then what should be the selling price to earned profit of 300%

If an article is sold for Rs. 178 at a loss of 11%, what should be its selling price in order to eam a profit of 11% ?

An article is sold for Rs 1725 at 15% profit. It is sold at 15% loss, then what will be the selling price ?

On selling an article for Rs 195, a shopkeeper losses 35% . At what price (in Rs) he should sell the article in order to earn a profit of 30% ?

On selling an article for Rs. 360 , a shopkeeper losses 10% . For how much (in Rs. ) he should sell the article in order to earn a profit of 25% ?

When the selling price is Rs 80 there is a loss of 20% .Find the selling price to earn 40% profit .