Activity Normal Preceding Crash Maximum

Time Activity Cost Crash Time

A $2$ None $00$

B $3$ A $1001$

C $5$ A $401$

D $3$ B $602$

E $5$ C $201$

F $4$ C $401$

G $2$ D$,$ E$,$ F $00$

Use the information provided to crash one$-$time unit per move using the least cost method. Reduce the schedule until you reach the crash point of the network. The project duration is $14$ time units and the total direct cost is $$1,200.$ Assume the total indirect cost for the project is $$700$ and there is a savings of $$50$ per time unit reduced. Compute the total project cost for each duration. What is the optimal cost and time?

Group of answer choices

$$1,660$ at $12$ time units

$$1,860$ at $11$ time units

$$1,760$ at $11$ time units

$$1,860$ at $12$ time units