71 - 21.24 (30% OFF) = ₹49.56

42.00 + 7.56 (18%) = 49.56

• 15 + @ 34% : 39.90 + 18% = 47.08
• 30 + @ 37% : 37.80 + 18% = 44.60
• 50 + @ 40% : 35.70 + 18% = 42.13