Day7：金培培老师21天打卡训练营：牛吃草问题金培培老师21天训练营6年级数学提升"

本文《Day7：金培培老师21天打卡训练营：牛吃草问题》是傻大方资讯网小编整理于开放的互联网，版权归原作者所有。

金培培老师21天训练营

6年级数学提升

<br /><p style = "font-size:18px"><strong>今日作业</strong></p><img alt="Day7：金培培老师21天打卡训练营：牛吃草问题" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_png/DNEodxDX7DmicbDXXJiagHHnBMh7R4vvibzL6AUnyR745n1e2hoyofDdE2JWNv0lXpFh3qV0ENuuzClXwvALGUvqw/?wx_fmt=png" /><br /> <p style = "font-size:18px">J博士参观博物馆排队检票，检票开始前的若干分钟已经有游客开始排队，他发现每分钟来的游客一样多。若同时开3个检票口40分钟队伍消失，若同时开4个检票口20分钟队伍消失。如果同时开7个检票口，多少分钟队伍消失？</p><p style = "font-size:18px"><img alt="Day7：金培培老师21天打卡训练营：牛吃草问题" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/DNEodxDX7DmicbDXXJiagHHnBMh7R4vvibzCEGsBbtwxjJvibAdMW77PzKAnHTmZibe73ghAyKsuicPAibPTa6kZVblPg/?wx_fmt=jpeg" /><br /></p> </p> <div class="dede_pages"><ul></ul></div> <div class="pcd_ad"> <div style=margin-top:10px;> <center> <script type="text/javascript" src="//bd100.shadafang.com/production/k_fe/openjs/ce_lx_gc.js"></script> <script 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