Compare first, then convert. It takes 5 hours for a boat to sail 48 kilometers along the current and 16 kilometers against the current; it also takes 5 hours to sail 32 kilometers along the current and 24 kilometers against the current. Find the speed of the boat in still water.
先比较，再转换．一条船顺水航行48千米，再逆水航行16千米，共用了5小时；这条船顺水航行32千米，再逆水航行24千米，也用了5小时．求这条船在静水中的速度．
<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">48 + 32</gadget>
<output>80</output>

<gadget id="calculator">80 / 5</gadget>
<output>16</output>

<gadget id="calculator">48 / 16</gadget>
<output>3</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">16 + 8</gadget>
<output>24</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<result>12</result>