Xiaohong has to do homework after school and help her mother with housework. It takes 30 minutes to do homework, 5 minutes to wipe the floor, 6 minutes to boil water, and 20 minutes to wash clothes in the washing machine. Red at least how many minutes.
小红放学回家要做作业，还要帮妈妈做家务，其中做作业要30分钟，擦地5分钟，烧水用6分钟，用洗衣机洗衣服要20分钟，这些工作如果都做完，小红至少用多少分钟．
<gadget id="calculator">30 + 5</gadget>
<output>35</output>

<result>35</result>