Assume the network and data that follow. If the indirect costs for each project duration are: $$90(15$ units$),$ $$70(14$ units$),$ $$50(13$ units$),$ $$40(12$ units$),$ $$30(11$ units$),$

Answer the following:

i$)$ Compute the total direct costs for each project duration. $(5$ marks$)$

ii$)$ Indicate crashed activities $(4$ marks$)$

iii$)$ Compute the total project cost for each project duration. $(1$ mark$)$