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  3. A certain shipping service charges an insurance fee of $0.75 when shipping any package with contents worth $25.00 or less and an

A certain shipping service charges an insurance fee of $0.75 when shipping any package with contents worth $25.00 or less and an

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问题 A certain shipping service charges an insurance fee of $0.75 when shipping any package with contents worth $25.00 or less and an insurance fee of $1.00 when shipping any package with contents worth over $25.00. If Dan uses the shipping company to ship three packages with contents worth $18.25, $25.00, and $127.50, respectively, what is the total insurance fee that the company charges Dan to ship the three packages?
选项 A、1.75
B、2.25
C、2.5
D、2.75
E、3
答案C
解析 Note that two of the packages being shipped have contents that are worth $25.00 or less. Therefore, each of them has an insurance fee of $0.75, for a total of $1.50. The third package has contents worth over $25.00, and it has an insurance fee of $1.00. Therefore, the total insurance fee for the three packages is $1.50 + $1.00 = $2.50, and the correct answer is Choice C.
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