90 - 18.00 (20% OFF) = ₹72.00

61.02 + 10.98 (18%) = 72.00

• 36 + @ 24% : 57.97 + 18% = 68.40
• 72 + @ 28% : 54.92 + 18% = 64.80
• 120 + @ 32% : 51.86 + 18% = 61.20