A buisnessman has 1000kg of rice,part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole.How much kg of rice did he sell at 18% profit?

A 600

B 620

C 640

D none

Correct Answer: Option A

My Examiner Solution-

Applying Rules Of Alligation,

Profit In 1^st=8% Profit In 2^nd =18%

Total Profit=14%

So, We Will Get 4% And 6%

So,4:6=2:3, He Sells in 18%=

Or,

8% of x+18% of(1000-x) =14% of 1000

Then x=600kg