Sometimes a radio program is added to the carrier in such a way that the program signal causes fluctuations in the carrier's frequency. This is called frequency modulation (FM). Another way of sending a radio signal is to make the peaks of the carrier wave bigger or smaller.
Calculating the percentage profit made. It is also possible to work out the percentage profit that is made on a deal. This is done using the profit and the price that something cost originally, before it was sold on (the Cost Price). Percentage Profit = (profit/cost price) x 100%. The next example shows how this is done. Example.
1 Gross Profit Margin: The gross profit margin equation is typically used to determine the profit margin of a singular product or service, not of an organization as a whole. It then divides that by the retail price. 2  For example, if you sell a product for $25, and it costs $20 to make, the gross profit margin is 20% ($5 divided by $25). 3  Net Profit Margin: This is often the equation used to determine an entire organizationâs profit margin.