百分率的問題

2006-12-02 10:10 pm
甲比乙多20%,問乙是甲的百分之幾?

回答 (9)

2006-12-02 10:14 pm
✔ 最佳答案
proof 乙係100,
甲即係120(because 甲比乙多20%)
so, 100/120*100%
than answer is 83.3333%
2006-12-02 10:36 pm
當甲係120,乙係100,因為100x(1+20%)=120
Let乙 be x
Let甲be 1.2x (因為1+20%)
1/1.2x100%
=83.33%(cor.to 2 d.p.) (83.33%=0.8333呢個係約數,請用計算機禁完再save低先計下面既數)
proof:
120x83.33%=100
2006-12-02 10:27 pm
設甲=120, 乙=100

100(乙)
---------- x 100%
120(甲)
1
乙是甲的83-----%
3

2006-12-02 14:29:28 補充:
.................1sorry is 83-----%.................3

2006-12-02 14:30:12 補充:
...................1sorry is 83-----%...................3
2006-12-02 10:26 pm
proof 乙係100,
甲即係120(because 甲比乙多20%)
so, 100/120*100%
than answer is 83.3333%
2006-12-02 10:23 pm
乙是甲的百分之幾?
那麼應以甲為中心,即甲是100%,
甲做分母,乙做分子,再乘以100%
100分之100-20乘以100%
100分之80乘以100%(分母100和100%的100約簡)
答案等於80%
2006-12-02 10:21 pm
100 X (100%+20%)
=100 X 120
=100 X 120/100
=20

2006-12-02 14:22:42 補充:
打錯左..應該係=120%
2006-12-02 10:19 pm
甲比乙多20%,問乙是甲的百分之幾?


easy!!!!!
甲=100%
乙=20%
100% + 20%
=120%

乙是甲的120%
參考: me
2006-12-02 10:15 pm
乙:x
甲:x+(0.2x)
x/1.2x
=1/1.2
約=83%
2006-12-02 10:13 pm
~~~~~~~~~~百分之2

2006-12-02 14:14:23 補充:
上面哥個錯嫁 百分之80


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