淘宝网店刷销量:脑筋急转弯 ,。。。。

来源:百度文库 编辑:中科新闻网 时间:2024/05/16 09:01:32
Each baker can bake 2 cakes in 20 minutes.
If 4 bakers are working, how many cakes are baked in 2 hours

30