There are 47 people in the dance group of the Children's Palace, and the number of the chorus team is 10 less than twice that of the dance group. How many people are there in the Children's Palace chorus?
少年宫舞蹈组有47人，合唱队的人数比舞蹈组的2倍少10人．少年宫合唱队有多少人？
<gadget id="calculator">47 * 2</gadget>
<output>94</output>

<gadget id="calculator">94 - 10</gadget>
<output>84</output>

<result>84</result>