please teach me step by step please

OUESTION $2[$Total: $32$ marks$]$

a$)$ Latifah produces crispy fish cakes in three plants A$,$ B and C$.$ It has three major customers X$,$

Y and Z $.$ The transportation cost per unit $($in RM$)$ from each plant to each destination are given

in the table below:

$($i$)$ Find the initial feasible solution using Northwest Corner method and the associated initial

total shipping cost.

$[6$ marks$]$

$($ii$)$ Find the optimal transportation schedule and cost using Stepping Stone method.

$[14$ marks$]$

b$)$ A consultant company has five consultants available to be assigned to five projects. The time,

in hours, for each consultant for different projects are shown in the following table. Each

project can be assigned to only one consultant.

Determine the optimal assignment using the Hungarian method. Then, compute the

minimum total man$-$hours to complete all the projects.