Answer:
The gross margin for December is: 0.5%.
The Gross margin of an organisation or business measure the extent by which its income exceeds the costs it incurs in producing its goods and or services.
The gross margin is measured in percentages. The higher the percentage of this margin, the higher the effectiveness of the company's management in deriving value from every dollar invested.
Explanation:
To arrive at Gross Margin, one is required to subtract the total cost of goods sold from total revenue for the period and dividing that number by revenue. That is:
Gross Margin (GM) = 
Step I - Calculate Revenue
This is given as the total amount of goods sold which is:
800 x $500 = $400,000
Step II - Calculate Cost of Goods Sold
Cost of goods sold per unit is given as
$250 per unit.
Total Cost of Goods sold therefore is
800 x $250 = $200,000
Step III - Calculate Gross Margin
= 
= 
=
or 0.5%
Cheers!
Pardon me but how about…yes?
According to The American opportunity tax credit (AOTC<span>) Each student could </span>get a maximum annual<span> credit of $2,500 per eligible student.
So, </span><span>maximum education credit that emilio and lara can take on their return collectively is:
$ 2,500 x 2 = $ 5,000</span>