Liu Ran and her mother went to the playground to ride the electric plane. The amusement park stipulates that student tickets are 40% off. They paid a total of 24 yuan for an adult ticket and a student ticket. How much is an adult ticket?
刘然和妈妈一起去游乐场乘电动飞机．游乐场规定学生票打6折，他们共付了24元买一张成人票和一张学生票，一张成人票多少元？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 * (3/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">24 / (8/5)</gadget>
<output>15</output>

<result>15</result>