求比值25分钟:1/4小时= ;化简比:1又1/5:0.54=
人气:133 ℃ 时间:2019-11-19 06:15:47
解答
25分钟:1/4小时=25分钟:15分钟=5:3
1又1/5:0.54=1.2:0.54=20:9
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