A computer$-$system installation project consists of eight activities. The immediate predecessors and activity times in weeks are shown below.

Immediate Activity

Activity Predecessor$($s$)$ Time

A

$$

$2$

B

$$

$7$

C

A

$4$

D

B$,$ C

$2$

E

C$,$ D

$3$

F

E

$3$

G

B

$9$

H

F$,$ G

$4$What is the project completion time? Round your answer to the nearest whole number.

weeks