一道英文计算题
问题描述：
一道英文计算题
条件：Labour Costs:£166,000
Q：If this company employed eighty permanent employees in January who
were on the same salary,what would have been the effect on labour costs if
they had replaced twenty permanent employees with interim staff each on
monthly salaries of £3,000?
这个题目的答案是“Labour Costs将增加£18,500”.请翻译一下这个题目的意思~
答
一家公司于一月份招收了80名固定员工,他们的工资相同,新招来的员工替代了原来的20名固定员工和临时员工（他们的月薪是3000英镑）,问这样对劳动成本的影响?他们工资相同如何理解？和谁比较？