The rates (费用) at an Internet bar are as follows: First 30 minutes$3.00 Every additional (增加的) 15 mi

题目简介

The rates (费用) at an Internet bar are as follows: First 30 minutes$3.00 Every additional (增加的) 15 mi

题目详情

The rates (费用) at an Internet bar are as follows:
First 30 minutes$3.00       
Every additional (增加的) 15 minutes$2.00
How much does Ginny have to pay if she was on-line for 50 minutes?

A. $5
B. $7
C. $9
题型:单选题难度:中档来源:0108 期末题

答案

B

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