AMC 8 1992 Problem 8
AMC8 1992 年第 8 题
方程与不等式★★☆☆☆
A store owner bought 1500 pencils at $ 0.10 each. If he sells them for $ 0.25 each, how many of them must he sell to make a profit of exactly $ 100.00 ?
一位店主以每支 $0.10 的价格购入 1500 支铅笔。如果他以每支 $0.25 的价格出售，他必须卖出多少支才能恰好获得 $100.00 的利润？
- A.400
- B.667
- C.1000
- D.1500
- E.1900
正确答案 · Correct Answer
C
解析 · Solution
Solution 1
1500×0.1=150, so the store owner is $150 below profit. Therefore he needs to sell 150+100= 250 dollars worth of pencils. Selling them at $0.25 each gives .
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