A basket of jujubes weighs 20 kilograms, and the weight of a basket of pomegranates is 10 kilograms less than twice that of a basket of jujubes. How much does a basket of pomegranates weigh?
一筐大枣重20千克，一筐石榴的质量比一筐大枣的2倍少10千克．一筐石榴重多少千克？
<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<gadget id="calculator">40 - 10</gadget>
<output>30</output>

<result>30</result>