The following table lists the components needed to assemble an end item, the manufacturing or purchase lead times $($in weeks$)$ for typical lot sizes, amount on hand, and the direct components of each item and, in brackets, the number of each component for each parent.

Item Lead Time Amount on

Hand Direct

Components

End item $1-$ L$(2),$ C$(1),$ K$(3)$

L $322$ B$(2),$ J$(3)$

C $218$ G$(2),$ B$(2)$

K $240$ H$(4),$ B$(2)$

B $225$

J $430$

G $210$

H $4-$

If $42$ units of the An order for $42$ units of the end item is scheduled to be shipped at the start of week $11.$ What is the latest week that the components of the order can be started and the order still be ready to ship on time? end item are to be assembled, how many additional units of B are needed?