Answer:
the final cost of the meal for a family of four, including the 25% off discount and 18% tip, is $70.80.
Explanation:
Part A:
Based on the price range given, a meal for a family of four would cost between $60 and $100. It is difficult to determine the exact cost without additional information such as the restaurant, menu choices, and location.
Part B:
If the family has a 25% off coupon, the new price of the meal would be 75% of the original price. To calculate the new price, we can use the formula:
New Price = Original Price x (1 - Discount Percentage)
Let's assume the original price of the meal is $80. Then, using the formula above, we can calculate the new price with the 25% off coupon:
New Price = $80 x (1 - 0.25) = $60
So, the new price of the meal after the discount is $60.
To calculate the 18% tip on the new price, we can use the formula:
Tip = New Price x Tip Percentage
Where the Tip Percentage is 18% or 0.18 in decimal form. Using the new price of $60, we can calculate the tip:
Tip = $60 x 0.18 = $10.80
So, the tip for the meal is $10.80.
Finally, to calculate the final cost of the meal including the discount and tip, we can add the new price and tip:
Final Cost = New Price + Tip
Final Cost = $60 + $10.80 = $70.80
So, the final cost of the meal for a family of four, including the 25% off discount and 18% tip, is $70.80.