题目内容
一种商品先提价
,再降价
.现价( )
| 1 |
| 10 |
| 1 |
| 11 |
| A.与原价相等 | B.比原价高 | C.比原价低 |
解(1+
)×(1-
)
=
×
=1
故选A.
| 1 |
| 10 |
| 1 |
| 11 |
=
| 11 |
| 10 |
| 10 |
| 11 |
=1
故选A.
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题目内容
| 1 |
| 10 |
| 1 |
| 11 |
| A.与原价相等 | B.比原价高 | C.比原价低 |
| 1 |
| 10 |
| 1 |
| 11 |
| 11 |
| 10 |
| 10 |
| 11 |