Beta biodiversity is an example of

A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is-

If the profit on selling an article for Rs. 425 is the same as the loss on selling it for Rs. 355, then the cost price of the article is 

By selling an article for Rs. 450, I lose 20%. For what price should I sell it to gain 20% ? 

There is 10% loss if an article is sold at Rs. 270. Then the cost price of the article is

A fruit merchant makes a profit of 25% by selling mangoes at a certain price. If he charges Re. 1 more on each mango, he would gain 50%. At first the price of one mango was

Pooja wants to sell a watch at a profit of 20%. She bought it at 10% less and sold it at ₹ 30 less, but still she gained 20%. The cost price of watch is

A merchant loses 10% by selling an article. If the cost price of the article is ₹ 15, then the selling price of the article is