The price of a pair of table tennis rackets is 20 yuan more than that of a pair of badminton rackets, and the price of a table tennis racket is 1.5 times that of a badminton racket. How much is a pair of table tennis rackets? (solution by equation)
一副乒乓球拍的价钱比一副羽毛球拍贵20元，乒乓球拍的价钱是羽毛球拍的1.5倍，一幅乒乓球拍多少钱？(用方程解)
<gadget id="calculator">1.5 - 1</gadget>
<output>0.5</output>

<gadget id="calculator">20 / 0.5</gadget>
<output>40</output>

<gadget id="calculator">40 * 1.5</gadget>
<output>60</output>

<result>60</result>