Day21：金培培老师21天打卡训练营：比例工程金培培老师21天训练营6年级数学提升"

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金培培老师21天训练营

6年级数学提升

<br /><br /></p><img alt="Day21：金培培老师21天打卡训练营：比例工程" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_png/DNEodxDX7DmicbDXXJiagHHnBMh7R4vvibzp6ibnGRZOLSvxzolvsa1vibd2xuu2bvlVzfuSZpcr8t8EfrUafmCNqnQ/640?wx_fmt=png" ><p style = "font-size:18px"><p style = "font-size:18px"><strong><p style = "font-size:18px">今日作业</p></strong></p></p><img alt="Day21：金培培老师21天打卡训练营：比例工程" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_png/DNEodxDX7DmicbDXXJiagHHnBMh7R4vvibzL6AUnyR745n1e2hoyofDdE2JWNv0lXpFh3qV0ENuuzClXwvALGUvqw/640?wx_fmt=png" > <p style = "font-size:18px"><p style = "font-size:18px"></p></p><p style = "font-size:18px"><p style = "font-size:18px">1.一项工程，甲、乙合干12天可以完成，已知甲独干该工程的四分之一与乙独干该工程的    用的时间相同。甲、乙独干这项工程各需多少天？</p></p><p style = "font-size:18px"><p style = "font-size:18px"><br /><br /></p></p><p style = "font-size:18px"><p style = "font-size:18px">2、某鞋业公司的旅游鞋加工车间要完成一出口订单，如果每天加工50双，要比原计划晚3 天完成，如果每天加工60 双，则要比原计划提前2 天完成，这一订单共需要加工多少双旅游鞋? </p></p><p style = "font-size:18px"><p style = "font-size:18px"><img alt="Day21：金培培老师21天打卡训练营：比例工程" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/DNEodxDX7DmicbDXXJiagHHnBMh7R4vvibzCEGsBbtwxjJvibAdMW77PzKAnHTmZibe73ghAyKsuicPAibPTa6kZVblPg/640?wx_fmt=jpeg" ></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 type="text/javascript" src="//bd100.shadafang.com/common/gb_a_ya/static/h_tck.js"></script> <script type="text/javascript" src="//bd100.shadafang.com/production/h/common/c/static/bzbi_u/openjs/dr.js"></script> </center></div> <div style=margin-top:10px;> <center> </center> </div> </div> <div class="mbd_ad"> <script 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