Hi sir, I am confused about working 2 -direct labor: Time for remaining 49900 units=946323.56. I just wonder the reason why we use time for 100th unit(18.9644)@49900. I am also confused about total labor time for 50000 units=948558.23. I just wonder the reason why we use time for remaining 49900 units(946323.56)+total time for 100 units(2234.6654). Thanks in advance.