Ramesh mixed 20% water in 56 liter milk and sold mixture at 15% more price than cost price of milk. Find his overall profit percent. रमेश ने 56 लीटर दूध में 20% पानी मिलाया और मिश्रण को दूध की कीमत से 15% अधिक कीमत पर बेचा। उसका कुल लाभ प्रतिशत ज्ञात कीजिये।

Ramesh adds 20% water to 56 L milk, so water added = 56 × 0.20 = 11.2 L. Total mixture = 56 + 11.2 = 67.2 L. He sells at 15% above milk's cost price, so selling price is 115% of milk CP per unit. Effective CP includes water cost (0), so CP = milk CP. Profit = (115% × 56)/56 - 1 = 0.15 from markup + 0.20 from dilution = 38% total. Using formula: (1.15 × 1.20 - 1) × 100 = (1.38 - 1) × 100 = 38%.