1.
一本書$60,現以20%出售.求折扣?
2.
一把雨傘標價$120,以$108賣出,折扣%?
3.
一個電話標價$1840,以15%賣出.售價?
4.
機械狗售價$760,以60%賣出.標價?
數:百分數折扣(連步驟)
2006-11-15 5:57 am
回答 (3)
2006-11-15 6:10 am
✔ 最佳答案
1. 折扣是：$60 x ( 1 - 20%)
= $60 x 80%
= $48
2. 折扣%是：
($108 / $120) x 100%
= 90%
3. 售價是：
$1840 x (1-15%)
=$1840 x 85%
= $1564
4. 標價是：
$760 / 60%
= $1266 2/3
2006-11-15 6:13 am
1: $12
2: 10%
3: $1084
4: 1266$
2: 10%
3: $1084
4: 1266$
2006-11-15 6:13 am
1. 60 x20%
=60 X 20/100
=12
2. 120 x y% =108
120y/100 =108
120y =108x 100
y=90
=90%
3.1840 x (1-15%)<---the meaning should be (or 1840 x15%)
=1840 x 85%
=1840 x 85/100
=1564
4. y x 60% =760
y = 760 /(60/100)
y = 1266.6
y= (1267)
=60 X 20/100
=12
2. 120 x y% =108
120y/100 =108
120y =108x 100
y=90
=90%
3.1840 x (1-15%)<---the meaning should be (or 1840 x15%)
=1840 x 85%
=1840 x 85/100
=1564
4. y x 60% =760
y = 760 /(60/100)
y = 1266.6
y= (1267)
參考: me
收錄日期: 2021-04-13 14:11:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061114000051KK04630