A dishonest dealer professes to sell goods at the cost price but uses a weight of 840 grams per kg, what is his percent?  Choices:
A) 19  B) 25  C) 77  D) 88  E) 11
840 --- 160   100 --- ? =&gt; 19%   19nswer:19
<result>A</result>
A dishonest dealer professes to sell goods at the cost price but uses a weight of 840 grams per kg, what is his percent?