问题
解答题
一件商品先打八折后，又提价20%，这件商品现在的价格是（ ）
A．比原价低
B．比原价高
C．与原价相等
D．无法比较
答案
设此件商品的原价是1，
1×80%×（1+20%），
=0.96，
0.96＜1，
所以现价比原价降低了，
故选：A．
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一件商品先打八折后，又提价20%，这件商品现在的价格是（ ）
A．比原价低
B．比原价高
C．与原价相等
D．无法比较
设此件商品的原价是1，
1×80%×（1+20%），
=0.96，
0.96＜1，
所以现价比原价降低了，
故选：A．
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| Dear Mum, I am happy here. I have 1 new friends. They are Jill and Bill. Jill is twelve. She comes 2 the USA. Bill is twelve, too. He is 3 . 4 are polite and helpful. We are all good friends. After school, we often (经常) go to ABC park. The park is 5 the left of my school. It's not big 6 it's clean. The park is very 7 . There are 8 trees and flowers in it. In the middle of the park, 9 is a playground. We often 10 football there. Best wishes. Yours, David | |||
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