Case $1$ Continuous Review System

A distribution center $($D C$)$ in Wisconsin stocks Sony plasma T V sets. The center receives its inventory from a mega warehouse in Kansas with a lead time $($L$)$ of $6$ days.

The DC uses a reorder point $($R$)$ of $300$ sets and a fixed order quantity $($Q$)$ of $350$ sets.

Current on$-$hand inventory at the end of Day $1$ is $400$ sets.

There are no scheduled receipts $($SR$)$ and no backorders $($BO$).$ All demands and receipts occur at the end of the day.

Determine X$1,$ X$2,$X$3,$ X$4$ values when to order using a Q $($continuous review$)$ system using below figure:

If $3$rd day demand is $100$ What is;

X$3-$On hand inventory $?$