Question

The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.96, and and they leave a 20% tip. If the tip applies to the cost of the meal before the discount, what is the total cost of the meal? Round your intermediate calculations and answer to the nearest cent.

Answer 1

To calculate the Jayden family's total meal cost including a 15% discount and a 20% tip on the original cost, subtract the discount from the original meal price, then add the tip to the discounted cost. The total cost is approximately 82.91.

Step-by-step explanation:

The Jayden family's restaurant meal had a 15% discount and they left a 20% tip on the original meal cost before the discount. To calculate the total cost of their meal, follow these steps:

1. Calculate the discount amount by converting the percentage to a decimal and multiplying by the original meal cost: 0.15 × 78.96 = 11.844.
2. Subtract the discount from the original meal cost to find the discounted meal cost: 78.96 -11.844 = 67.116 (rounded to67.12).
3. Calculate the tip amount on the original meal cost: 0.20 × 78.96 = 15.792.
4. Finally, add the tip to the discounted meal cost to find the total: 67.12 + 15.792 =82.912 (rounded to 82.91).

The total cost of the meal for the Jayden family, including the discount and tip, is approximately 82.91.

Answer 2

multiply the cost by 1.2 (120%) to add 20% tip, and then multiply by 0.85 (85%) to take off 15%

78.96 x 1.2 x 0.85 = 80.54