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

游客2024-08-17  7

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 25

解析
转载请注明原文地址:https://tihaiku.com/zcyy/3723227.html
最新回复(0)