AMC10 2007 A

AMC10 2007 A · Q1

AMC10 2007 A · Q1. It mainly tests Percent.

One ticket to a show costs $20$ at full price. Susan buys $4$ tickets using a coupon that gives her a $25\%$ discount. Pam buys $5$ tickets using a coupon that gives her a $30\%$ discount. How many more dollars does Pam pay than Susan?

一张演出票全价为$20$美元。Susan 使用一张提供$25\%$折扣的优惠券买了$4$张票。Pam 使用一张提供$30\%$折扣的优惠券买了$5$张票。Pam 比 Susan 多付了多少美元？

(A) 2 2

(B) 5 5

(D) 15 15

(E) 20 20

Answer

Correct choice: (C)

正确答案：（C）

Solution

Susan pays $(4)(0.75)(20) = 60$ dollars. Pam pays $(5)(0.70)(20) = 70$ dollars, so she pays $70 - 60 = 10$ more dollars than Susan.

Susan 支付 $(4)(0.75)(20) = 60$ 美元。Pam 支付 $(5)(0.70)(20) = 70$ 美元，因此她比 Susan 多付 $70 - 60 = 10$ 美元。

Topics

AR.003 Percent