Final answer:
Each of the four friends owes $18.88 for the meal with an 18% tip included. First, calculate the tip amount by multiplying the meal cost by 18%, then add it to the original meal cost, and finally, divide by four.
Step-by-step explanation:
To determine how much each of the 4 owe for the meal plus tip, the first step is to calculate the total amount of tip by converting the percentage to a decimal and multiplying it by the total cost of the meal. So, for a tip rate of 18%, the calculation is as follows:
Tip = 18% of $64 = 0.18 × $64 = $11.52
Adding this to the cost of the meal gives you the total cost:
Total Cost = Meal Cost + Tip = $64 + $11.52 = $75.52
Finally, to find out what each of the 4 friends, including Newman, owe, you divide the total cost by 4:
Each Owes = Total Cost ÷ Number of Friends = $75.52 ÷ 4 = $18.88
Therefore, each of the four friends owes $18.88.