As following chart is about preceded and followed relationship and cost slope of each processes. Obtain a minumum cost for reducing 4 weeks from total duration with using MCX(Minimum cost expediting) method. please use diagram of ADM.

ACTIVITY Duration (Weeks) 2 3 Possible reduction weeks) Cost Slope (Weeks) A 2 B 4 2 FOLLOWE D BY B, C, D E F G H J I, K I, K L J 90 80 70 90 D 5 3 7 2 4 2 150 4 2 3 1 1 2 E F G H I J K L M N N 4 80 100 120 50 60 100 70 2 2 1 2 2 M M N 4 3 2 NONE