A shopkeeper has 280 kg of apples. He sells 40% of these at 10% profit and remaining 60% at 30% profit. Find his % profit on total.  Select:  A) 22 %  B) 25 %  C) 26 %  D) 28 %  E) 35 %

Rationale: if the total quantity was 100 then 40 x 10 % + 60 x 30 % = 22 this profit will remain same for any total quantity unless the % of products remains the same . hence ' a ' is the answer
Answer: A