At the eating contest the winner ate an average of 15 hot dogs at the first 20 s

游客2024-08-18  12

问题 At the eating contest the winner ate an average of 15 hot dogs at the first 20 sittings. After a further 20 sittings the average increased to 20 hot dogs. What was the average for the last 20 sittings?

选项

答案 20

解析 前20轮共吃汉堡300个,40轮下来共吃汉堡800个,则后20轮吃汉堡500个,因此每轮吃25个。
转载请注明原文地址:https://tihaiku.com/zcyy/3724453.html
最新回复(0)