A dishonest dealer professes to sell goods at the cost price but uses a weight of 800 grams per kg, what is his percent?  Select the correct option:
A) 27%
B) 25%
C) 26%
D) 35%
E) 29%
800 --- 200   100 --- ? =&gt; 25%   Answer: 25%
<result>B</result>
A dishonest dealer professes to sell goods at the cost price but uses a weight of 800 grams per kg, what is his percent?