A dishonest dealer professes to sell goods at the cost price but uses a weight of 600 grams per kg, what is his percent?
Select:  A) 28%  B) 66.7%  C) 55%  D) 28%  E) 55%
600 --- 400   100 --- ? =&gt; 66.7%   Answer: 66.7%
<result>B</result>
A dishonest dealer professes to sell goods at the cost price but uses a weight of 600 grams per kg, what is his percent?