IIM Bangalore (UGAT) (QA) PYQs

An article costing ₹80 was marked 25% above the cost price. After offering a discount of X%, the customer now pays ₹81. If the marked price is increased twice successively by X% and the article is sold at the new marked price, then the profit would be what percent more than the profit when the selling price was ₹81?

In Saroja's sari shop, the marked price of each sari is x% above the cost of its procurement. She sells each sari after a discount of 25%. In addition, if someone buys a dozen saris, she offers an extra sari for free, and still makes a profit of 8% over their cost of procurement. If Saroja had sold the saris without discounting, but with the offer of an extra saree for every dozen sold, then her profit percentage would have been: