求一道算术题答案
A=35000
B=7000
C=A+B
F=D+E
A:B=D:E
若F=38000
求D和E各是多少?
要公式
人气:204 ℃ 时间:2020-04-02 21:30:38
解答
A=35000 B=7000
C=A+B=35000+7000=42000
A:B=35000:7000=5:1
F=D+E=38000
D:E=A:B=5:1
D=[5/(5+1)]x38000=(5/6)x38000=95000/3
E=[1/(5+1)]x38000=(1/6)x38000=19000/3
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