Number of apples = 400 Cost price per hundred apples =₹1200 Profit = ₹800 Calculation: Cost price (CP) for 400 apples =(1200∕100)×400=₹4800 Selling price(SP) = Cost price + Profit = ₹4800+ ₹800= ₹5600 Number of dozens in 400 apples =400∕12=33.33 dozens Selling price per dozen = Total selling price ∕ Number of dozens Selling price per dozen = ₹5600 / 33.33 ↷ ₹168