2. 外语
  3. A shoe store charges $39 for a pair of a certain type of sneaker. This price is 30% more than the amount it costs the shoe store

A shoe store charges $39 for a pair of a certain type of sneaker. This price is 30% more than the amount it costs the shoe store

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问题 A shoe store charges $39 for a pair of a certain type of sneaker. This price is 30% more than the amount it costs the shoe store to buy one pair of these sneakers. A sales associate can purchase a pair of these sneakers at 20% off the store’s cost. How much would an associate pay for a pair of these sneakers(excluding sales tax)?
选项 A、$31.20
B、$25.00
C、$24.00
D、$21.84
E、$19.50
答案C
解析 The correct answer is C. First recognize that $39 is 30% more than the cost of the sneakers for the store. This can be represented as 130%, or 1.3. Therefore, the store pays $39/1.3, or $30 for a pair of sneakers. A sales associate pays 80% of this price: $30(0.8)=$24.
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