![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
某次知识竞赛共有30道题,每一题答对得,答错或不答都扣,小亮得分要超过,他至少要答对多少道题如果设小亮答对了x道题,根据题意列式得()
A.5x﹣3(30﹣x)>70
B.5x+3(30﹣x)≤70
C.5x﹣3(30+x)≥70
D.5x+3(30﹣x)>70
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
A、5x﹣3(30﹣x)>70
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.5x﹣3(30﹣x)>70
B.5x+3(30﹣x)≤70
C.5x﹣3(30+x)≥70
D.5x+3(30﹣x)>70
A、5x﹣3(30﹣x)>70
A.10x-5(20-x)≥90
B.10x-5(20-x)>90
C.10x-(20-x)≥90
D.10x-(20-x)>90
A.7/8
B.6/7
C.3/5
D.1/3
A.3
B.4
C.5
D.6
A.6
B.8
C.10
D.12