The master and the apprentice process parts. The master takes 2 hours longer to process 3000 parts than the apprentice to process 2400 parts. It is also known that the work efficiency ratio of the master and the apprentice is 6:5. How many parts does the apprentice process per hour? [Reminder: The work efficiency ratio is 6:5, if the apprentices work according to the time required to process 2400 parts, the total work ratio should also be 6:5]
师、徒二人加工零件，师傅加工3000个零件比徒弟加工2400个零件多用2小时，又知师傅和徒弟的工作效率比是6：5．徒弟每小时加工多少个零件？【提示：工作效率比是6：5，若都按徒弟加工完2400个零件的时间工作，其工作总量比也应是6：5】
<gadget id="calculator">2_400 / 5</gadget>
<output>480</output>

<gadget id="calculator">480 * 6</gadget>
<output>2_880</output>

<gadget id="calculator">3_000 - 2_880</gadget>
<output>120</output>

<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<result>50</result>