A trader bought 640 kg of rice. He sold a part of rice at 20% profit and the rest at 5% loss. He earned a profit of 15% in the entire transaction. What is the quantity (in kg) of rice that he sold at 5% loss?
Answer & explanation
Correct answer: option 1
Quantity of rice = 640 kg
Overall profit percent = 15%
20% -5%
15%
20% 5%
4 : 1 = Total = 5
5x = 640
1x = 128kg