per cent|percent

你答对了20%的答案——这意味着每五个中有一个。

You got 20 ___percent of the answers right - that means one in every five.

我喜欢色彩鲜艳的衣服，这条裙子在打折，所以我只需支付原价的30%。

I love colourful clothes and this skirt was in a sale so I just had to pay 30 ___percent of the old price.

百分之二十的学生通过了考试。

Twenty ___percent of the students passed the exam.

百分之二十的学生步行上学。

Twenty ___per ___cent of the students walk to school.