Final answer:
To calculate the total cost of a dinner including an 18% tip on a $72 meal, first find the tip amount by multiplying 0.18 by $72, getting $12.96. Then add this to the meal cost for a total of $84.96.
Step-by-step explanation:
The question you've asked involves calculating the total cost of a dinner, including an 18% tip, which is a common mathematics problem related to percentages and basic algebra. This falls under the category of mathematics, and more specifically, it can be classed as arithmetic involving percentages which is typically covered in middle school math.
Let's walk through the solution step by step:
- First, we find the amount of the tip by converting 18% into a decimal format (0.18) and then multiplying it by the cost of the meal ($72). This gives us the tip amount: 0.18 x $72 = $12.96.
- Next, we add this tip amount to the original cost of the meal to find the total cost. So, $72 + $12.96 = $84.96.
Therefore, the total cost of the dinner, including the tip, would be $84.96.