The price of lunch for 15 people was $207.00, including a 15 percent gratuity for service. What was the average price per person, EXCLUDING the gratuity? (A) $11.73 (B) $12.00 (C) $13.80 (D) $14.00 (E) $15.87 题目不是s+v+o,doing做伴随状语么?我的理解是15个人的午餐费包括15%的服务费共207元???