Final answer:
The total cost of the dinner for Mr. and Mrs. Green's family, including an 18% tip on a $72 meal, is $84.96. To calculate this, convert the tip percentage to a decimal and multiply by the meal cost, then add the result to the original cost.
Step-by-step explanation:
To calculate the total cost of the dinner, including the 18% tip, we first need to determine the amount of the tip. To do this, we convert the tip percentage to a decimal by dividing by 100 and then multiply by the cost of the meal.
For Mr. and Mrs. Green and their four children, the meal cost $72. The tip would be calculated as follows:
Tip = $72 × 18%
Tip = $72 × 0.18
So, the amount of the tip is:
Tip = $12.96
Adding this to the original cost of the meal gives us the total cost:
Total Cost = Cost of the meal + Tip
Total Cost = $72 + $12.96
Total Cost = $84.96
If Jerod and his friends decide to leave an 18% tip at the restaurant they visited, they would calculate the tip in a similar manner and add it to the cost of the meal plus any sales tax.
In addition to understanding how to calculate tips, keep in mind that restaurant workers might have a subminimum wage, relying on tips to supplement their income. Knowing how to calculate a tip properly is not only useful for determining your total payment but is also a sign of awareness and respect for the service workers' financial situation.