A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of body weight, by what percent was the prescribed dosage greater than the typical dosage?
A. 8
B. 9
C. 11
D. 12.5
E. 14.8
這題我有點迷惑,因為醫生的劑量好像比typical的輕耶,是我弄錯了嗎??
硬去算的話我算出11.1...
可答案是12.5
有沒有人可以幫忙解釋一下....感激吶
謝謝妮的解答..還叮嚀我耶..真是寒冬中的暖流.... 
