A project as shown in Table 3 consists of 10 activities, lettered A through J are given to complete it. You have been requested to crash the project since it has slipped considerably behind schedule. Table 3 Normal Crashed Duration Cost Duration Cost Activity Predecessor (week) (RM) (week) (RM) A - 10 4500 2 6200 B A 6 2000 1 3000 C A 6 500 2 1900 D B 5 3500 1 5000 E A, D 4 750 1 1200 F C, D, E 6 2500 3 5000 G D, E, F 7 1000 1 2100 H A, B 7 1400 2 2000 I F, G 6 1300 J A, F, H 5 1000 22 2 1800 1400 (a) Calculate the new total project costs and duration after crashing. (b) Validate your result based on the concept of crashing. (25 Marks) (5 Marks)