问题描述:
SAT数学题,求翻译和讲解
A rectangular floor 18 feet by 10 feet is to be completely covered with carpeting that costs x dollars per square yard. In terms of x, how many dollars will the carpeting cost? (1 yard=3 feet)
A 20x B 28x C 60x D 180x E 540x
答案是A,求讲解
A rectangular floor 18 feet by 10 feet is to be completely covered with carpeting that costs x dollars per square yard. In terms of x, how many dollars will the carpeting cost? (1 yard=3 feet)
A 20x B 28x C 60x D 180x E 540x
答案是A,求讲解
问题解答:
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