they came from the March $1$ purchase. Required Compute the cost of goods sold for the year ended December $31,2011,$ and the ending inventory under the following cost assumptions: a$.$ First$-$in$,$ first$-$out $($FIFO$)$ b$.$ Last$-$in$,$ first$-$out $($LIFO$)$ c$.$ Average cost $($weighted average$)$ d$.$ Specific identification P $6-18$ The following data relate to inventory for the year ended December $31,2011.$ A physical inventory on December $31,2011,$ indicates that $600$ units are on hand and that they came from the July $1$ purchase. Required Compute the cost of goods sold for the year ended December $31,2011,$ and the ending inventory under the following cost assumptions: a$.$ First$-$in$,$ first$-$out $($FIFO$)$ b$.$ Last$-$in$,$ first$-$out $($LIFO$)$ c$.$ Average cost $($weighted average$)$ d$.$ Specific identificationP $6-17$ The following data relate to inventory for the year ended December $31,2009$:

A physical inventory on December $31,2009,$ indicates that $400$ units are on hand and that they came

from the March I purchase.

Required Compute the cost of goods sold for the year ended December $31,2009,$ and the ending

inventory under the following cost assumptions:

a$.$ First$-$in$,$ first$-$out $($FIFO$)$

b$.$ Last$-$in$,$ first$-$out $($LIFO$)$

c$.$ Average cost $($weighted average$)$

d$.$ Specific identification