80×7/8÷1/6
=70÷1/6
=420(千米)
420×(1-1/6)÷80
=350÷80
=4.375(小时)
一辆汽车以每小时80千米的速度行了八分之七小时,所行的路程正好为全程的六分之一,全程共有多少千米?↓
一辆汽车以每小时80千米的速度行了八分之七小时,所行的路程正好为全程的六分之一,全程共有多少千米?↓
这辆汽车到达重点还需要多长时间?
这辆汽车到达重点还需要多长时间?
数学人气:838 ℃时间:2019-12-04 05:17:08
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