amy is 25% taller than billy.
billy is 25% shorter than candy.
is candy taller or shorter than amy?
by what percentage is?
吾好only俾ans我 我要知點計 吾該
math percentage
2008-08-12 4:36 pm
回答 (2)
2008-08-12 5:16 pm
✔ 最佳答案
Let a=amy ,b=billy ,c=candya=125%b
b=75%c
a=125%x75%c
a=93.75%c
candy taller than amy
2008-08-16 5:50 pm
Let a=amy ,b=billy ,c=candy
a=1.25*b----(1)
b=0.75*c----(2)
By substitutionof b=0.75*c into (1):
a=1.25*0.75*c
a=0.9375*c
so candy is taller with 6.25% shorter than amy.
a=1.25*b----(1)
b=0.75*c----(2)
By substitutionof b=0.75*c into (1):
a=1.25*0.75*c
a=0.9375*c
so candy is taller with 6.25% shorter than amy.
收錄日期: 2021-04-26 17:31:42
原文連結 [永久失效]:
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