small boat is traveling against the current, and when a Little Red Riding Hood is found falling into the water from the boat, the distance between Little Red Riding Hood and the school boat is 600 meters. It is known that the speed of the boat in still water is 120 meters per minute, and the speed of the current is 20 meters per minute. , ask how many minutes it takes for the boat to go back to Little Red Riding Hood after turning around?
一只小船逆流而行，一顶小红帽从船上落入水中被发现时，小红帽一遇校船相距600米，已知小船在静水中的速度是每分钟120米，水流的速度是每分钟20米，问小船掉头后需要多少分时间可追溯到小红帽？
<gadget id="calculator">120 - 20</gadget>
<output>100</output>

<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<gadget id="calculator">600 / 120</gadget>
<output>5</output>

<result>5</result>