Hello there! I can help you with this! So when it comes to gratuity, we are talking about the tip. There is a certain percentage of the bill you would have to pay as the tip. So, what we would do is multiply 20% (0.2) and 141 to get the amount of gratuity added. 141 * 0.2 is 28.2. There. The amount of gratuity added is $28.20.
Note: When it comes to looking for the amount of tips (gratuity) or tax in something, you must multiply. Converting the percentages into decimal form will help solving for the answer much more simpler, especially if you don't have a calculator available and/or you're not allowed to use a calculator.
