A dishonest dealer professes to sell goods at the cost price but uses a weight of 800 grams per kg, what is his percent?  Choose the correct answer
A) 2%	B) 25%	C) 22%	D) 29%	E) 45%
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?