You are presented with the following information Trusty Ltd:

$\backslash$table$[[,$Purchases $($units$),$Unit cost, $$,$Issue to production $($units$)],[\frac{01}{01}\frac{?}{2008},2000,10,1600],[\frac{31}{01}\frac{?}{2008},,,],[\frac{01}{02}\frac{?}{2008},2400,11,2600],[\frac{28}{02}\frac{?}{2008},,,1000],[\frac{01}{03}\frac{?}{2008},1600,12,10],[\frac{31}{03}\frac{?}{2008},,,]]$

Note: There was no opening stock.

Required

Calculate the value of closing stock at $31$ March $2008$ using each of the following methods of pricing the issue of materials to production:

$($i$)$ FIFO $($first$-$in$,$ first$-$out$)$; and $(10$ marks$)$

$($ii$)$ AVCO $(10$ marks$)$