Measuring Performance: Return on Investment $($ROI$)$

One of the most important metrics for measuring performance is return on investment $($also known as ROI$).$ ROI represents the

percentage of net profit return on an investment. In other words, ROI measures how much you gained for a specific amount of money

put in$.$ To calculate ROI, you divide net profit by the amount invested and then multiply by $100\%$ to get the percentage return on the

investment, so ROI $=($Net Profit $/$ Investment$)100\%.$ Consider the case where a marketing manager is comparing two different ad

campaigns and has the following results:

What is the return on investment for each Ad campaign?