Answer:
Gross Margin = 60.97%
Net Profit Margin = 4.337%
Step-by-step explanation:
Gross Profit Margin =

Here as per the data provided,
Net Sales for the year 2017 = $784,000
Cost of goods sold for the year 2017 = $306,000
Gross Profit Margin =
= 60.97%
Net profit margin =
=
= 4.337%
Since it is not specified which margin to calculate, when we say profit margin we will calculate gross margin.
Gross Margin = 60.97%
Net Profit Margin = 4.337%