题目内容
一种商品,先提价
,在降价
,售价不变.______.
| 1 |
| 4 |
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| 4 |
1×(1+
)×(1-
),
=1×
×
,
=
×
,
=
,
1>
.
答:售价变低了,
故答案为:错误.
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| 4 |
| 1 |
| 4 |
=1×
| 5 |
| 4 |
| 3 |
| 4 |
=
| 5 |
| 4 |
| 3 |
| 4 |
=
| 15 |
| 16 |
1>
| 15 |
| 16 |
答:售价变低了,
故答案为:错误.
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