题目内容
一件商品先降价
,再涨价
,还是原价.______.(判断对错)
| 1 |
| 10 |
| 1 |
| 10 |
(1-
)×(1+
)
=
×
,
=
.
即再涨价
,是原价的
.
故答案为:错误.
| 1 |
| 10 |
| 1 |
| 10 |
=
| 9 |
| 10 |
| 11 |
| 10 |
=
| 99 |
| 100 |
即再涨价
| 1 |
| 10 |
| 99 |
| 100 |
故答案为:错误.
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