(橫式,答案)
1.)鮮果汁1升,昨天喝了30%,今天喝了50%。共喝了多少毫升?
2.)威化餅一盒有50塊,永正吃了20%,永玉吃了16%。還餘多少塊?
3.)姐姐有朱古力糖160克,妹妹有的是姐姐的85%。妹妹有朱古力糖多少克?
4.)弟弟去年身高120厘米,今年增加了15%。他今年身高多少厘米?
5.)哥哥有36元,昨天用去了20%,今天用去了25%。昨天比今天少用多少元?
6.)曲奇餅一盒,吃去了18%後,還有82塊。這盒曲奇餅原有多少塊?
百分率的計算
2006-11-16 2:30 am
回答 (8)
2006-11-16 2:43 am
✔ 最佳答案
1. 1000 X (30% + 50%) = 800 毫升2. 50-[50 X (20% + 16%)] = 50 - 18 = 32 塊
3. 160 X 85% = 136 塊
4. 120 + 120 X 15% = 120 + 22.5 =142.5 厘米
5. 26 X (25% - 20%) = 26 X 5% = 1.3 元
6. 82 ÷ (100% - 18%) = 82 ÷ 82% = 100 塊
2006-11-16 2:56 am
1, 1升=100毫升
so Yesterdaty I drink about 30ml, 100*(0.3)=30
Then, we still have about 70ml, 100*(1-0.3)=70
Today, I drink about 35ml,70*(0.5)=35
At last we drink about 65ml as 30+35=65
2, 50*(1-0.2)( 1-0.16)=33.6塊 so we still have a 33
3, 160*85/100=136g
4 120*(1+0.15)=138
5, Yesterday elder brother spending :36*0.2=7.2
Today, he spend :(36-7.2)*0.25=7.2
so he doesn;t have 昨天比今天少用 that probem
6, let x be the total of the biscuit numbers
X *(1-0.18)=82
X*0.82=82
X=100
Finally, the total of the biscuit numbers is 100
so Yesterdaty I drink about 30ml, 100*(0.3)=30
Then, we still have about 70ml, 100*(1-0.3)=70
Today, I drink about 35ml,70*(0.5)=35
At last we drink about 65ml as 30+35=65
2, 50*(1-0.2)( 1-0.16)=33.6塊 so we still have a 33
3, 160*85/100=136g
4 120*(1+0.15)=138
5, Yesterday elder brother spending :36*0.2=7.2
Today, he spend :(36-7.2)*0.25=7.2
so he doesn;t have 昨天比今天少用 that probem
6, let x be the total of the biscuit numbers
X *(1-0.18)=82
X*0.82=82
X=100
Finally, the total of the biscuit numbers is 100
參考: ME
2006-11-16 2:49 am
1)1升=1000毫升
(1000x30%)+(1000x1/2)
=300+500
=800毫升
2)威化餅還餘:
50x(50x20%+50x16%)
=50-(10+8)
=50-18
=32塊
3)妹妹有朱古力糖:
60x85%
=136克
4)他今年身高:
=120x115%
=138厘米
5)昨天用:36x20%
=7.2元
今天用:(36-7.2)x25%
=7.2元
'.'昨天比今天少用0元
6)這盒曲奇餅原有:
2x(100/100-18%)
=100塊
(1000x30%)+(1000x1/2)
=300+500
=800毫升
2)威化餅還餘:
50x(50x20%+50x16%)
=50-(10+8)
=50-18
=32塊
3)妹妹有朱古力糖:
60x85%
=136克
4)他今年身高:
=120x115%
=138厘米
5)昨天用:36x20%
=7.2元
今天用:(36-7.2)x25%
=7.2元
'.'昨天比今天少用0元
6)這盒曲奇餅原有:
2x(100/100-18%)
=100塊
2006-11-16 2:48 am
1)(1000x30%)+(1000x50%)=800毫升
2)50 - { ( 1 x 20 % ) + ( 1 x 16 % ) }=32塊
3)160x85%=136克
4)120+(120x15%)=138厘米
5)(36x25%)-(36x20%)=1.8元
6) X(英文)
2)50 - { ( 1 x 20 % ) + ( 1 x 16 % ) }=32塊
3)160x85%=136克
4)120+(120x15%)=138厘米
5)(36x25%)-(36x20%)=1.8元
6) X(英文)
2006-11-16 2:41 am
1. 1升=1000毫升
1x(30%+50%)=1000x80%=800毫升
2. 50x(1-20%-16%)=50x64%=32塊
3. 160x85%=136克
4. 120x(1+15%)=120x115%=135厘米
5. 36x(25%-20%)=36x5%=1.8元
6. 82/18%=100塊
2006-11-15 18:43:49 補充：
6. 82/(1-18%)=82/82%=100塊
1x(30%+50%)=1000x80%=800毫升
2. 50x(1-20%-16%)=50x64%=32塊
3. 160x85%=136克
4. 120x(1+15%)=120x115%=135厘米
5. 36x(25%-20%)=36x5%=1.8元
6. 82/18%=100塊
2006-11-15 18:43:49 補充：
6. 82/(1-18%)=82/82%=100塊
2006-11-16 2:41 am
1.)1000x(30%+50%)=800ml
2.)50x(1-20%-16%)=32
3.)160x85%=136g
4.)120x(1+15%)=138cm
5.)昨天:36x20%=7.2
今天:36x25%=9
昨天比今天少用:9-7.2=$1.8
6.)82÷82%=100
2.)50x(1-20%-16%)=32
3.)160x85%=136g
4.)120x(1+15%)=138cm
5.)昨天:36x20%=7.2
今天:36x25%=9
昨天比今天少用:9-7.2=$1.8
6.)82÷82%=100
2006-11-16 2:39 am
1.)800
2.)32
3.)136(no sure)
4.)138
5.)1.8
6.)96(no sure)
2.)32
3.)136(no sure)
4.)138
5.)1.8
6.)96(no sure)
2006-11-16 2:38 am
1.1000X30%=300 300X50%=150 共喝了150毫升
2.50-(50X36%)=32
3.160X85%=136
4.120X(1+15%)=138
5.36X5%=1.8
6.設A
A-(AX18%)=82
A=100
2.50-(50X36%)=32
3.160X85%=136
4.120X(1+15%)=138
5.36X5%=1.8
6.設A
A-(AX18%)=82
A=100
收錄日期: 2021-04-12 22:51:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061115000051KK02752