A trader has 50 kg of rice, apart of which he sells at 10 per cent profit and the rest at 5 per cent loss. He gains 7 per cent on the whole. What is the quantity sold at 10 per cent gain and 5 per cent loss? Choose the most appropriate option.
A) 30kg, 10kg
B) 40kg, 15kg
C) 35kg, 40kg
D) 40kg, 10kg
E) 50kg, 10kg
Ratio of quantities sold at 10%profit and 5%loss   =&gt;12:3 = 4:1   Therefore,the quantity sold at 10%profit   =50/(4 +1) x 4   =40 kg   and the quantity sold at 5%loss   =50 - 40= 
<gadget id="calculator">50 - 40</gadget>
<output>10</output>
10 kg   ANSWER:40kg, 10kg
<result>D</result>
A trader has 50 kg of rice, apart of which he sells at 10 per cent profit and the rest at 5 per cent loss. He gains 7 per cent on the whole. What is the quantity sold at 10 per cent gain and 5 per cent loss?