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数学
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甲数比乙数多80%,乙数与甲数的比是( )
A. 5:4
B. 4:5
C. 9:5
D. 5:9
人气:103 ℃ 时间:2020-05-21 03:43:16
解答
1:(1+80%),
=1:1.8,
=(1×5):(1.8×5),
=5:9;
故选:D.
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