Nisha allows a discount of 15% on the marked price. How much above the cost price must she mark his goods as to gain 19%? निशा वस्तु के अंकित मूल्य पर 15% की छूट देती है। वह वस्तु के क्रय मूल्य से कितना अधिक अंकित करें कि 19% का लाभ प्राप्त हो।

Let CP = 100. Desired SP for 19% gain = 119. With markup of m% and 15% discount: 0.85(100+m) = 119. Solving: 85 + 0.85m = 119, so 0.85m = 34, giving m = 40. Option C matches. To verify: Mark up by 40% (MP = 140), give 15% discount (SP = 0.85 × 140 = 119), which is 19% profit on CP of 100. Options A, B, and D don't yield 19% profit.