我想問下呢D有份數的RATIO,,
1) 1/X:1/Y=1:2, 1/Y: 1/Z =3:4
下1步就系1/X:1/Y:1/Z :3:6:8
咁要求X:Y:Z的話下1步應該點計??
Maths(10fun) ratio
2007-11-03 9:50 pm
回答 (2)
2007-11-03 10:03 pm
✔ 最佳答案
1/X:1/Y=1:2y:x=1:2
1/Y: 1/Z =3:4
z:y=3:4
y:x=4*1:4*2
y:x=4:8
z:y:x=3:4:8
2007-11-03 10:22 pm
點解「下1步就系1/X:1/Y:1/Z :3:6:8」??????
我會咁計:-
(1/x)/(1/y)=1/2
(1/x)*y=0.5
y/x=0.5
y=0.5x .......................................... (1)
(1/y)/(1/z)=3/4
z=0.75y ........................................ (2)
Let x = 1, put into (1)
y =0.5;
Thus, y=0.5 put into (2)
z = 0.375
X:Y:Z = 1:0.5:0.375 (全都乘8)...
X:Y:Z = 8:4:3
我會咁計:-
(1/x)/(1/y)=1/2
(1/x)*y=0.5
y/x=0.5
y=0.5x .......................................... (1)
(1/y)/(1/z)=3/4
z=0.75y ........................................ (2)
Let x = 1, put into (1)
y =0.5;
Thus, y=0.5 put into (2)
z = 0.375
X:Y:Z = 1:0.5:0.375 (全都乘8)...
X:Y:Z = 8:4:3
參考: 自己亂計的 = =a
收錄日期: 2021-04-13 14:19:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071103000051KK01858