AMC 8 2015 Problem 1
AMC8 2015 年第 1 题
表达式与运算★☆☆☆☆
Onkon wants to cover his room's floor with his favourite red carpet. How many square yards of red carpet are required to cover a rectangular floor that is 12 feet long and 9 feet wide? (There are 3 feet in a yard.)
要覆盖长 12 英尺，宽 9 英尺的长方形地板，需要多少平方码的地毯？（1 码等于 3 英尺）
- A.12
- B.36
- C.108
- D.324
- E.972
正确答案 · Correct Answer
A
解析 · Solution
Solution 1
We need square feet of carpet to cover the floor. Since there are 9 square feet in a square yard, we divide this by 9 to get square yards.
Since there are 3 feet in a yard, we divide 9 by 3 to get 3 yards, and 12 by 3 to get 4 yards. To find the area of the carpet, we then multiply these two values together to get square yards.
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