Xiaohua wants to help her mother do the following things: It takes 20 minutes to wash the clothes in the washing machine; 6 minutes to sweep the floor; 10 minutes to wipe the furniture; 5 minutes to dry the clothes. She has made reasonable arrangements, how many minutes it will take at least to finish these things.
小华想帮妈妈做下面的事情：用洗衣机洗衣服要用20分钟；扫地要用6分钟；擦家具要用10分钟；晾衣服要用5分钟．她经过合理安排，做完这些事至少要花多少分钟．
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<result>25</result>