Question $2$:

$[15]$

The following table gives the baseline cost and time estimates $($BCE and BTE$),$ the cost and time estimates to correct for failure, and the likelihood of failure for each work package in a riverbank dam project.

$\backslash$table$[[\backslash$table$[[$WBS$],[$Element$]],$BCE,$\backslash$table$[[$BTE$],[($wk$)]],\backslash$table$[[$Corrective$],[($Cost$)]],\backslash$table$[[$Corrective$],[($Time$)]],$Likelihood$],[$M$,$R $25\mathrm{.}000,10,$R $5,000,3,0\mathrm{.}25],[$N$,$R $18\mathrm{.}000,7,$R $4,000,2,0\mathrm{.}2],[0,$R $40\mathrm{.}000,6,$R $10,000,3,0\mathrm{.}3],[$P$,$R $22\mathrm{.}000,8,$R $6\mathrm{.}000,2,0\mathrm{.}15],[0,$R $17\mathrm{.}000,4,$R $3\mathrm{.}000,1,0\mathrm{.}1],[$R$,$R $12\mathrm{.}000,5,$R $4\mathrm{.}000,2,0\mathrm{.}2],[5,$R $20\mathrm{.}000,6,$R $5\mathrm{.}000,2,0\mathrm{.}3]]$

$2\mathrm{.}1.$ Determine the risk time and risk cost for all the was elements of the project.

$(7)$

$2\mathrm{.}2.$ Determine the critical path and the duration of the project.

$(4)$