While selling a watch ,a shopkeeper gives a discount of 5% .If he gives a discount of 7%, he earns Rs.15 less as profit, the marked price of the watch is - एक घड़ी को बेचने पर एक दुकानदार 5% की छूट देता है। यदि वह 7% की छूट देता है तो वह लाभ के रूप में 15 रू. कम पाता है। घड़ी का अंकित मूल्य है?

Let marked price be M. At 5% discount, profit = some amount. At 7% discount, profit reduces by Rs. 15. The difference in discount is 2% of marked price, which equals Rs. 15. So 0.02M = 15, M = 15/0.02 = Rs. 750. The profit at each discount level is not given, but the key insight is that the 2% difference in discount causes Rs. 15 difference in profit.