Question
You buy a shirt for $20. If the sales tax is 7%, what is the amount of tax (in dollars)? What is the cost of the shirt after tax?(1 point)
Responses
Sales tax = $21.40; Cost of shirt after tax = $41.40
Sales tax = $21.40; Cost of shirt after tax = $41.40
Sales tax = $1.40; Cost of shirt after tax = $21.40
Sales tax = $1.40; Cost of shirt after tax = $21.40
Sales tax = $140; Cost of shirt after tax = $160
Sales tax = $140; Cost of shirt after tax = $160
Sales tax = $14; Cost of shirt after tax = $34
Sales tax = $14; Cost of shirt after tax = $34
A family's dinner bill subtotaled $38.82. If they left a 15% tip, how much was the cost of dinner? (Before tax)(1 point)
Responses
$38.82
$38.82
$5.82
$5.82
$33.00
$33.00
$44.64
A dress originally cost $50. It is now on sale for 20% off. What is the cost of the dress after discount? (before tax)(1 point)
Responses
$10.00
$10.00
$60.00
$60.00
$30.00
$30.00
$40.00
Responses
Sales tax = $21.40; Cost of shirt after tax = $41.40
Sales tax = $21.40; Cost of shirt after tax = $41.40
Sales tax = $1.40; Cost of shirt after tax = $21.40
Sales tax = $1.40; Cost of shirt after tax = $21.40
Sales tax = $140; Cost of shirt after tax = $160
Sales tax = $140; Cost of shirt after tax = $160
Sales tax = $14; Cost of shirt after tax = $34
Sales tax = $14; Cost of shirt after tax = $34
A family's dinner bill subtotaled $38.82. If they left a 15% tip, how much was the cost of dinner? (Before tax)(1 point)
Responses
$38.82
$38.82
$5.82
$5.82
$33.00
$33.00
$44.64
A dress originally cost $50. It is now on sale for 20% off. What is the cost of the dress after discount? (before tax)(1 point)
Responses
$10.00
$10.00
$60.00
$60.00
$30.00
$30.00
$40.00
Answers
GPT-4o mini
Let's break down each question one by one:
1. **Calculating the sales tax and total cost of the shirt**:
- Shirt cost: $20
- Sales tax rate: 7% (0.07)
Sales tax = Shirt cost x Sales tax rate
Sales tax = $20 x 0.07 = $1.40
Cost after tax = Shirt cost + Sales tax
Cost after tax = $20 + $1.40 = $21.40
So, the correct response is:
**Sales tax = $1.40; Cost of shirt after tax = $21.40**
2. **Calculating the cost of dinner**:
- Dinner bill subtotal: $38.82
- Tip rate: 15% (0.15)
The question asks for the cost of dinner **before the tax**, but since the given amount is the subtotal, that is before any tip or additional tax. So, the answer is simply:
**$38.82**
3. **Calculating the cost of the dress after discount**:
- Original dress cost: $50
- Discount rate: 20% (0.20)
Discount amount = Original cost x Discount rate
Discount amount = $50 x 0.20 = $10
Cost after discount = Original cost - Discount amount
Cost after discount = $50 - $10 = $40
So, the correct response is:
**$40.00**
To summarize:
1. **Sales tax = $1.40; Cost of shirt after tax = $21.40**
2. **Cost of dinner (before tax) = $38.82**
3. **Cost of dress after discount = $40.00**
1. **Calculating the sales tax and total cost of the shirt**:
- Shirt cost: $20
- Sales tax rate: 7% (0.07)
Sales tax = Shirt cost x Sales tax rate
Sales tax = $20 x 0.07 = $1.40
Cost after tax = Shirt cost + Sales tax
Cost after tax = $20 + $1.40 = $21.40
So, the correct response is:
**Sales tax = $1.40; Cost of shirt after tax = $21.40**
2. **Calculating the cost of dinner**:
- Dinner bill subtotal: $38.82
- Tip rate: 15% (0.15)
The question asks for the cost of dinner **before the tax**, but since the given amount is the subtotal, that is before any tip or additional tax. So, the answer is simply:
**$38.82**
3. **Calculating the cost of the dress after discount**:
- Original dress cost: $50
- Discount rate: 20% (0.20)
Discount amount = Original cost x Discount rate
Discount amount = $50 x 0.20 = $10
Cost after discount = Original cost - Discount amount
Cost after discount = $50 - $10 = $40
So, the correct response is:
**$40.00**
To summarize:
1. **Sales tax = $1.40; Cost of shirt after tax = $21.40**
2. **Cost of dinner (before tax) = $38.82**
3. **Cost of dress after discount = $40.00**