The problem asks us to calculate the total bill before tax and tip for a group of friends at Jae's cafe. The costs of their main courses are $13.99, $16.99, $19.99, and $21.99. The total cost of their drinks is $12.00. They also have a coupon for discounts on main courses: 10% off for items between $15 and $19.99, and 15% off for items $20 and up.
2025/4/18
1. Problem Description
The problem asks us to calculate the total bill before tax and tip for a group of friends at Jae's cafe. The costs of their main courses are 16.99, 21.
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9. The total cost of their drinks is $12.
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0. They also have a coupon for discounts on main courses: 10% off for items between $15 and $19.99, and 15% off for items $20 and up.
2. Solution Steps
First, we calculate the total cost of the main courses before applying the coupon.
Total cost of main courses
Next, we apply the discounts using the coupon:
The $13.99 item does not receive a discount.
The $16.99 item receives a 10% discount.
Discounted price of = 16.99 - (0.10 \times 16.99) = 16.99 - 1.699 = 15.291 \approx 15.29$
The $19.99 item receives a 10% discount.
Discounted price of = 19.99 - (0.10 \times 19.99) = 19.99 - 1.999 = 17.991 \approx 17.99$
The $21.99 item receives a 15% discount.
Discounted price of = 21.99 - (0.15 \times 21.99) = 21.99 - 3.2985 = 18.6915 \approx 18.69$
Total cost of discounted main courses
Total cost of drinks
Total bill before tax and tip
3. Final Answer
The bill before tax and tip will be $77.96.