onsider the following work breakdown structure:

Duration Estimates $($Days$)$

Activity Precedes Optimistic Most Likely Pessimistic

Start U$,$V $---$

U W $355065$

V W$,$X $284052$

W Z $263544$

X Y $284052$

Y Z $262938$

Z End $366084$

What is the estimated slack time for activity W$?$