AMC 8 2004 Problem 1
AMC8 2004 年第 1 题
比与比例★☆☆☆☆
On a map, a 12 -centimeter length represents 72 kilometers. How many kilometers does a 17 -centimeter length represent?
在一张地图上，12 厘米长代表 72 公里。则 17 厘米长代表多少公里？
- A.6
- B.102
- C.204
- D.864
- E.1224
正确答案 · Correct Answer
B
解析 · Solution
Solution 1
We set up the proportion . Thus
Since we know 12 centimeters on the map is equal to 72 kilometers, 1 centimeter on the map is simply , which is 6. The problem is asking how many kilometers a 17 -centimeter length represents, so we multiply 6 by 17 which is simply 102, your answer.
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