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【OG20-P151-34题】
Cheryl purchased 5 identical hollow pine doors and 6 identical solid oak doors for the house she is building. The regular price of each solid oak door was twice the regular price of each hollow pine door.However, Cheryl was given a discount of 25% off the regular price of each solid oak door. If the regular price of each hollow pine door was $40, what was the total price of all 11 doors?
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预约讲师一对一题目解析课程30、【答案】C
【解析】Hollow pine door 的价格是$40，则solid oak door的价格是
40×2×(1-25%)=80×0.75=60。
所以总价钱为40×5+60×6=560。
【知识点补充】
a discount of 25% off：有25%的折扣（打7.5折）
题目讨论 （1条评论）
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小蚂蚁的窝
感觉答案是510啊 total=75%*（5*40+6*80）
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2020-01-11 17:10:20
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emily666回复小蚂蚁的窝
hp=5*40 so=6*80*3/4 total=560 打折的只有so一种
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2020-03-10 14:25:50
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