最新提问
我的动态
登录后查看动态
题目内容双击单词支持查询和收藏哦～
In a game, Mark could pick up either 2 point card or 4 point card. The average points of all the card he picks is 3.8.
Quantity A
The product when multiplying 9 and the number of times he picks up 2 point cards
Quantity B
The number of times he picks up 4 point cards
C显示答案
以上解析由 考满分老师提供。
