题目内容
买电脑.先降价
后,再涨价
,现价是多少元?

| 1 |
| 10 |
| 1 |
| 10 |
5000×(1-
)×(1+
),
=5000×
×
,
=4500×
,
=4950(元),
答:现价是4950元.
| 1 |
| 10 |
| 1 |
| 10 |
=5000×
| 9 |
| 10 |
| 11 |
| 10 |
=4500×
| 11 |
| 10 |
=4950(元),
答:现价是4950元.
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