
44 Enterprise Resource Planning
numbers to get an idea of the efforts required. Let us say, number of users are 1,297, number of sites
are 45, number of interfaces are 39, and number of modules to be implemented are 5.2. When we
plug-in these numbers in the above equation, we get effort as 14,827 work days that translate to 494 person
months. Referring to Table 3.4, this effort accounts for consulting and project team. One can convert the
effort into cost by accounting for cost of each resource. One of the popular equations to convert person
month to calendar month is the following:
7
Time in calendar months = 2.5 × pm
0.38
.
Using this equation, ...