this is the correct answer sheet, not the one posted above

Activity B C D E F Predecessor None E A B.CF AC Normal Time (days) Cost ($) 2 20 1 10 4 40 5 60 1 20 3 30 Crash Time (days) Cost ($) 1 30 1 10 2 60 3 64 1 20 2 36 mo Activity D B E F ES EF LS LF CP(s)