n the following table the activities with their precedence sequence and expected time$($weeks$)$ are listed for Lillian$$ Fok's construction project and on the right the precedence network is$$ shown:

$$

Activity

Nodes

Time$($weeks$)$

J

$1-2$

$8$

K

$1-3$

$8$

L

$2-4$

$6$

M

$2-3$

$3$

N

$3-4$

$4$

O

$4-5$

$7$

P

$3-5$

$7$

font size increased by $21$font size increased by $23$font size increased by $2$ Upper Kfont size increased by $22$font size increased by $2$ Upper Mfont size increased by $24$font size increased by $25$font size increased by $2$ Upper Jfont size increased by $2$ Upper Lfont size increased by $2$ Upper Ofont size increased by $2$ Upper Nfont size increased by $2$ Upper P