Xiao Ming gets up every morning to do some things, the time required is as follows: listening to the radio for 20 minutes, washing for 10 minutes, eating breakfast for 15 minutes, how many minutes are needed to finish these things at least.
小明每天早晨起床要做一些事情，所需要的时间如下：听广播20分，洗漱10分，吃早饭15分，做完这些事情至少需要多少分．
<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<result>25</result>