英语翻译10.What is the cost in dollars to steam clean a room W yards wide and L yards long it the steam cleaners charge 10 cents per square foot?A.0.9WLB.0.3WLC.0.1WLD.9WLE.3WL

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英语翻译10.What is the cost in dollars to steam clean a room W yards wide and L yards long it the steam cleaners charge 10 cents per square foot?A.0.9WLB.0.3WLC.0.1WLD.9WLE.3WL
英语翻译
10.What is the cost in dollars to steam clean a room W yards wide and L yards long it the steam cleaners charge 10 cents per square foot?
A.0.9WL
B.0.3WL
C.0.1WL
D.9WL
E.3WL

英语翻译10.What is the cost in dollars to steam clean a room W yards wide and L yards long it the steam cleaners charge 10 cents per square foot?A.0.9WLB.0.3WLC.0.1WLD.9WLE.3WL
题目的中文译文如下：
如果蒸汽清洁商每清洁一平方呎的收费为10分,那麼,要清洁一间阔 W 码,长 L 码的房间的费用要多少元?
计算过程如下：
由於收费是按平方呎计算,所以要先将房间的 W 码和 L 码化作呎（1 码 = 3 呢）.
房间的面积 = 3W x 3L = 9WL 平方呎
由於每平呎的收费是 10 分（即 0.1 元）,所以全屋的收费是 9WL x 0.1 = 0.9WL.所以答案是 A.

什么是成本以美元蒸汽清洁房间W码宽,L码时间蒸汽吸尘器充电10美分每平方英尺吗?
c
1美元=100美分，美元中没有‘角’单位，也就是10美分

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