A group of foreign tourists, everyone can speak at least one language, including 88 people who can speak English, 60 people who can speak French, and 40 people who can speak both languages. How many tourists are there in total? people.
一批外国旅游者，每人至少会说一门语言，其中会说英语的有88人，会说法语的有60人，其中两种语言都能说的有40人，这批旅游者共多少人．
<gadget id="calculator">88 - 40</gadget>
<output>48</output>

<gadget id="calculator">60 - 40</gadget>
<output>20</output>

<gadget id="calculator">48 + 20 + 40</gadget>
<output>108</output>

<result>108</result>