SSAT数学题：what will cost to tile a kitchen floor that is 12 feet wide by 20 feet long if .
问题描述：
SSAT数学题：what will cost to tile a kitchen floor that is 12 feet wide by 20 feet long if .
what will cost to tile a kitchen floor that is 12 feet wide by 20 feet long if the tile cost $8.91 per square yard?
yard 貌似是码的意思,估计有单位换算的说.
答
3 feet = 1 yard
解法：
12feet = 4 yard
20feet = 20/3 yard
地板的面积= 4 * 20/3= 80/3
cost= 面积*单价= 80/3 * 8.91= 237.60
答案选择 b
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