A batch of parts is evenly distributed to A and B to process at the same time. The two work for 8 days, and a total of (2/3) of this batch of parts is completed. Given that the work efficiency ratio of A and B is 5:3, how many days will it take for B to complete the task assigned to him?
把一批零件平均分给甲、乙两人同时加工，两人工作8天，共完成这批零件的(2/3)．已知甲与乙的工作效率之比是5：3，乙还要几天才能完成分配给自己的任务？
<result>24</result>