1316 (To be referenced for problem 217) Monohan Machinery specializes in developing weedharvesting equipment that is used to clear small lakes of weeds. George Monohan, president of Monohan Machinery, is convinced that harvesting weeds is far better than using chemicals to kill weeds. Chemicals cause pollution, and the weeds seem to grow faster after chemicals have been used. George is contemplating the construction of a machine that would harvest weeds on narrow rivers and waterways. The activities that are necessary to build one of these experimental weedharvesting machines are listed in the following table. Construct a network for these activities. ACTIVITIES . A B C D E F G H IMMEDIATE PREDECESSORS . A A B B C,E D,F \fTable 11.8 Activit y Total Budgeted Cost ($ ) Percent of Completi on Value of work Complet ed Actual Cost ($) ($) Activity Differen ce ($) 20,00 0 22,000 30,000 26,000 36,00 0 26,00 0 -2,000 6,000 6,000 0 1,200 11,200 20,00 0 8,800 6,000 4,000 -2,000 0 0 0 0 0 0 112,0 00 12,000 A 22,000 100 B 30,000 100 C 26,000 100 D 48,000 10 E 56,000 20 F 30,000 20 G 80,000 0 Total H 16,000 0 100,000 4,800 Overrun And activity F is 20% completed with an incurred cost of $4,000. Activities G and H have not been started. Is the air pollution project on schedule? What is the valve of work completed? Are there any cost overruns? The value of work completed, or the budgeted cost to date for any activity, can be computed as follows: Value of work completed = (Percentage of work completed) * (Total activity Budget) \f