The Thrifty Computer Company is trying to decide which of several lot$-$sizing procedures to use for its MRP system. The following information pertains to one of the typical component parts:

Setup cost $=$$$\frac{100}{?}$ order.

Inventory cost $=$$$\frac{1\mathrm{.}2}{?}$ unit$/$period$.$

$\backslash$table$[[,$Period$],[,1,2,3,4,5,6,7,8,9,10],[$Requirements$,70,30,35,60,60,25,35,70,45,70]]$

$.$ a$.$ Apply the Periodic Order Quantities $($POQ$)$ and calculate the total cost

b$.$ Apply Part Period Balancing $($PPB$)$ lot$-$sizing procedures and show the total cost$)$