When Fangfang’s house has guests, she receives guests, boils water for 10 minutes, washes fruit for 3 minutes, and makes tea for 2 minutes. It takes at least time for her to finish these tasks. How many points
芳芳家来客人，她接待客人，烧开水10分，洗水果3分，沏茶2分，她做完这些事至少需要时间．多少分
<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<result>12</result>