QUESTION $4$

Using the data in problem #$1,$ what is the earliest start time for activity D$?$

$13$

$15$

$12$

$9$

$1\mathrm{.}5$ points

QUESTION $5$

Using the data in problem #$1,$ what is the latest start time for activity B$?$

$6$

$9$

$12$

$15$