The air pollution project discussed in the chapter has progressed over the past several weeks, and it is now the end of week 8. Lester Harky would like to know the value of the work completed the amount of any cost overruns or underruns for the project, and the extent to which the project is ahead of or behind schedule by developing a table like Table 12.8. The revised cost figures are shown in the followingtable:

PERCENT OF ACTUAL ACTIVITY COMPLETION COST (S) 100 100 100 100 50 60 10 10 20,000 36,000 26,000 44,000 25,000 15,000 5,000 1,000