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.
Deduct the total expenses from the total income, and the profit is $1,500 a month. To calculate the profit rate, divide $1,500 by $3,500 and the result is a profit rate of 43 percent. Profit margin ratio is the ratio of the business's gross profit in relation to sales. Using the example above, your net income is $1,500 a month. Divide this figure by the total income of $5,000 a month, and your percentage of income that constitutes profit is 30 percent.