There are 20 very rich programs on the "June 1st" cultural evening. There are 4 dances, 3 sketches, 2 cross talks, 10 songs, and 1 instrument solo on the program list. Come up with two problems that can be solved using percentages. and answer the questions.
"六一"文艺晚会上表演的节目有20个挺丰富的，节目单上有4个舞蹈，3个小品，2个相声，10支歌曲，1个乐器独奏．请提出两个用百分数解决的问题．并对问题进行解答．
<gadget id="calculator">2 / 20</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>