一个400米的环形跑道,原来每隔5米插一面旗,现在每隔8米插一面旗,不需要重新插的彩旗有几面?
一个400米的环形跑道,原来每隔5米插一面旗,现在每隔8米插一面旗,不需要重新插的彩旗有几面?
数学人气:139 ℃时间:2019-10-14 03:19:47
优质解答
5,8的最小公倍数是40.,每隔40米的旗不用重新插,共有400/40=10面.
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