A dishonest dealer professes to sell goods at the cost price but uses a weight of 920 grams per kg, what is his percent?  Pick:
A) 22%
B) 25%
C) 77%
D) 99%
E) 8.7%
920 --- 80   100 --- ? =&gt; 8.7%   Answer: 8.7%
<result>E</result>
A dishonest dealer professes to sell goods at the cost price but uses a weight of 920 grams per kg, what is his percent?