數學percent超簡單題..

2007-12-21 3:58 am
1.如果A係20%多過B, 咁B少過A幾多?
應該搵邊個黎做份母,份子?

2. 如果C係25%少過D, 咁D多過C幾多?
應該搵邊個黎做份母,份子?

回答 (3)

2007-12-21 4:34 am
✔ 最佳答案
1.如果A係20%多過B, 咁B少過A幾多?
應該搵邊個黎做份母,份子?
A(1+20%)=B
A=5B/6
A多過B1/6

2. 如果C係25%少過D, 咁D多過C幾多?
應該搵邊個黎做份母,份子?
C(1-25%)=D
C=4D/3
C多過D1/3
2007-12-21 4:07 am
A(1+20%)=B
A=5B/6
A多過B1/6

C(1-25%)=D
C=4D/3
C少過D1/3
2007-12-21 4:06 am
如果A係20%多過B, 咁B少過A幾多?
應該搵邊個黎做份母,份子?
A做份子B,做份母


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