A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 75 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage?  Choose the correct answer.
A) 8%  B) 9%  C) 11%  D) 12.5%  E) 20%
Typical dosage is Dose : weight :: 2: 15.   Now if weight is 75 :(75/15)) then typical dosage would be 2 *5= 
<gadget id="calculator">2 *5</gadget>
<output>10</output>
10 cc.   Dosage= 18 cc. Dosage is greater by 2 cc.   % dosage is greater: (2 / 10)*100= 
<gadget id="calculator">(2 / 10)*100</gadget>
<output>20</output>
20 %   20% is the answer.
<result>E</result>
A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 75 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of the body weight, by what percent was the prescribed dosage greater than the typical dosage?