Ravi bought a watch and sold it to Ram at 20% profit. Then Ram wanted to sell it back to Ravi at 20% loss. If Ravi agrees to it, then Ravi will have

A person bought an article and sold it at a profit of 20%. Had he bought it at 20% less, what would have been the profit percentage if the selling price had been the same?

A profit of 10% is made when a smartphone is sold at P rupees and there is 4% loss when the smartphone is sold at Q rupees. Then P : Q is

A person sold a watch at a profit of 6 1/2%. If he had sold it for ₹ 2,500 more, he would have gained 19%. Find the cost price of the watch.

By selling 90 ball pens for ₹160 a person loses 20%. How many ball pens should be sold for ₹96 so as to have a profit of 20%?

A trader bought 10 items for 2,500 and sold them for ₹3,000. What is his profit percentage?