Use the following information for the specific identification method.

There are $1,300$ units of inventory on hand on September $30,20-2.$ Of these $1,300$ units:

$100$ are from October $18,20-1$

$200$ are from January $12,20-2$

$100$ are from March $17$

$400$ are from June $2$

$200$ are from August $21$

$300$ are from September $27$

Required:

$15$t purchase

$3$rd purchase

$4$th purchase

$5$ th purchase

$6$th purchase

$7$ th purchase

methnis