Williston Technologies wishes to use MRP methodology to develop a plan for the

next

$10$

$$weeks$.$ Williston Technologies has gathered the following information:

If the image of a four item bill of materials above does not display properly on your computer, it is the same product structure diagram that appears at the top of page

$412$

$$in your textbook.

Current Inventory Records

Item Lead Time

$($

weeks

$)$

$$Lot Size On Hand Inventory

A

$1$

$$LFL

$100$

B

$2250$

C

$330150$

D

$2100200$

Master Production Schedule

Item Week

$1$

$$Week

$2$

$$Week

$3$

$$Week

$4$

$$Week

$5$

$$Week

$6$

$$Week

$7$

$$Week

$8$

$$Week

$9$

$$Week

$10$

A

$000020025000500$

How many B$\text{'}$s are in inventory at the end of week $7?$