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Step 1: Ritu purchased 20 dozen bananas.
Cost per dozen = ₹375
Total cost price (CP) = 20 × 375 = ₹7500
Total number of bananas = 20 × 12 = 240
Selling price (SP) per banana = ₹33
Total SP = 240 × 33 = ₹7920
Profit = SP − CP = 7920 − 7500 = ₹420
Profit % = (Profit / CP) × 100 = (420 / 7500) × 100 = 5.6%
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