A shopkeeper sold an article at price of Rs. 288 at 4 % loss, to get a gain of 5% he should increase the price of article above cost price by how many rupees? एक दुकानदार ने 4% हानि पर एक वस्तु को 288 रुपए मे बेचा । 5% का लाभ प्राप्त करने के लिए उसे क्रय मूल्य से कितने रुपए अधिक मे बेचना चाहिए?

Selling at 4% loss for Rs. 288 means: 288 = 96% of CP. So CP = 288/0.96 = Rs. 300. For 5% profit, SP = 105% of CP = 300 × 1.05 = Rs. 315. The increase above cost price = 315 - 300 = Rs. 15. Alternatively: going from 4% loss to 5% profit requires a 9% increase, and 9% of Rs. 300 = Rs. 27. But we need the actual selling price increase, which is 315 - 288 = Rs. 27, and the increase above CP is Rs. 15.