Answer:
$ 330000
Step-by-step explanation:
Gross margin represent the amount of money remaining after the removal or subtraction of cost of product or services sold from its net sales \
Gross margin = ( total revenue - costs of good sold ) × 100
the sales in 2008 and 2009 were steady at $ 30 million dollar
the gross margin increased from 2.8% to 3.9 %
the amount the cost of sales reduced = ( $ 30 million × 0.039) - ( $ 30 million × 0.028) = $ 330000