Given a network for an HR training project with normal times and crash times (in parentheses), find the cost-duration history. Assume indirect costs for facilities and equipment are $100 per day. The data are:

Please explain in detail:

Time Reduction, Direct Cost per Day Activity 1-2: Obtain room 2-3: Select trainer 3-4: Invite personnel 2-4: Check budget $30 first, $50 second $80 $25 first, $60 second $30 first, $70 second, $90 third 6(4) 8(5) 5(4) 6(4) 3