A certain elementary school carried out the second classroom activity. There were 115 people in the art group, which was 5 people less than three times the number of the aircraft model group. How many people were there in the aircraft model group?
某小学开展第二课堂活动，美术小组有115人，比航模小组人数的3倍少5人，航模小组有多少人？
<gadget id="calculator">115 + 5</gadget>
<output>120</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<result>40</result>