question_answer

A merchant has 1000 kg sugar, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 8% profit is:

A)  600 kg 

B)  640 kg

C)  400 kg 

D)  560 kg

Correct Answer: C

Solution :

 By rule of allegation So ratio of 1st and 2nd part=4 : 6 =2 : 3 Quantity of 1st kind\[=\frac{2}{5}\times 1000=400\,\,kg\]