问题
单项选择题
A moving company charges a flat rate of $550 for loading its trucks and an additional $20 per 1/5 mile for moves within the city. How much would a move of 2.8 miles within the city cost ？（）
A. $690
B. $790
C. $830
D. $880
E. $1,010
答案
参考答案：C
解析：
8 miles is 14/5 miles, so the total cost is $550+(14×$20)=$830.