1. A = 100，B 小過 A 5 倍，B 是多少？
2. A = 100，B 小過 A 50%，B 是多少？
3. A = 100，B 小過 A 80%，B 是多少？
很深的數學題
2007-02-02 4:01 am
回答 (6)
2007-02-02 7:07 am
✔ 最佳答案
須然是很簡單的小學生數學題, 但是..., 唉!!!如果第1題改成 1倍(答案會是 0), 及第4題亦改成1倍(答案會是200), 相信可能會少啲人答錯。
1.) B = A * (1 - 5)
= 100 * (1 - 5)
= 100 * - 4
= - 400
2.) = 100 * (1 - 50%)
= 50
3.) = 100 * (1 - 80%)
= 20
4.) = 100 * (1 + 5)
= 600
5.) = 100 * (1 + 50%)
= 150
6.) = 100 * (1 + 80%)
= 180
2007-02-03 1:06 am
1.
B=100÷5=20
2.
B=100(1+50%)=150
3.
B=100(1+80%)=180
4.
B=100 X 5 = 500
5.
B=100÷(1-50%)=200
6.
B=100÷(1-80%)=500
B=100÷5=20
2.
B=100(1+50%)=150
3.
B=100(1+80%)=180
4.
B=100 X 5 = 500
5.
B=100÷(1-50%)=200
6.
B=100÷(1-80%)=500
2007-02-02 4:37 am
1.A=100,B=5A
B=100/5
B=20
2.A=100,B=2A
B=100/2
B=50
3.A=100,B=(1-80%)A
B=0.2A
B=20
B=100/5
B=20
2.A=100,B=2A
B=100/2
B=50
3.A=100,B=(1-80%)A
B=0.2A
B=20
參考: ME
2007-02-02 4:06 am
1) A = 5B, B = 20
2) (1-50%)A = B, B = 50
3) (1-80%)A = B, B = 20
2007-02-01 23:14:47 補充：
4) B = 5A = 5005) B = (1 50%)A = 1506) B = (1 80%)A = 180
2007-02-01 23:19:08 補充：
Amendments1) B = (1-5)A = -4*100 = -4004) B = (1 5)A = 6*100 = 600
2) (1-50%)A = B, B = 50
3) (1-80%)A = B, B = 20
2007-02-01 23:14:47 補充：
4) B = 5A = 5005) B = (1 50%)A = 1506) B = (1 80%)A = 180
2007-02-01 23:19:08 補充：
Amendments1) B = (1-5)A = -4*100 = -4004) B = (1 5)A = 6*100 = 600
2007-02-02 4:06 am
1.= <500
2.= <50
3.= <80
2.= <50
3.= <80
收錄日期: 2021-04-13 15:34:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070201000051KK03307