A shopkeeper bought 80 kg of rice at a discount of 10%. Besides 1 kg rice was offered free to him on the purchase of every 20 kg rice. If he sells the rice at the marked price, his profit percentage will be:
Answer & explanation
Correct answer: option 3
Let SP of 1 kg rice = Rs. 1
SP of 80 kg rice = Rs. 80
CP of 80 kg rice = 80 × \(\frac{9}{10}\) = Rs. 72
Rice got free on 80 kg = \(\frac{80}{20}\) = 4 kg
Total quantity of rice = 80 + 4 = 84 kg
Total SP of total rice = 84
Profit = 84 – 72 = 12
∴ Profit percentage = \(\frac{12}{72}\) × 100 = $16 \frac{2}{3} \%$