Final answer:
To calculate each person's share of a dinner bill with a tip, first calculate the tip by multiplying the bill amount by the tip percentage. Then add the tip to the original bill and divide by the number of people sharing the cost. In this case, each person would pay $13.62.
Step-by-step explanation:
The subject of the student's question is Mathematics, specifically focused on finding the total cost of a meal including a percentage-based tip and then determining the amount each person would pay when the total cost is shared equally. To calculate each person's share:
- First, find the amount of the tip by converting the percentage to decimal form and multiplying it by the cost of the meal. With a 20% tip, the calculation becomes $45.40 × 0.20 = $9.08.
- Add the tip to the original bill to find the total cost: $45.40 (original bill) + $9.08 (tip) = $54.48 (total cost).
- Divide the total cost by the number of friends to find each person's share: $54.48 ÷ 4 = $13.62.
So, each person would pay $13.62.