It takes 13 minutes to boil water; 5 minutes to wash vegetables, and 10 minutes to cook vegetables. How many minutes is the minimum time to complete the above tasks?
烧开水需要13分钟；洗菜需要5分钟，炒菜需要10分钟，完成以上工作最少要多少分钟．
<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<result>15</result>