There are 30 people in the mathematics team in the school, and the number of people in the mathematics team is 20% more than that of the art team. If so, how many people are there in the art team? (Solution of column equation and solution of column comprehensive formula)
学校数学小组有30人，数学小组的人数比美术小组的人数多20%，如果那么美术小组有多少人？(列方程解答和列综合算式解答)
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">30 / (6/5)</gadget>
<output>25</output>

<result>25</result>