Question

In Pennsylvania, sales tax rates vary by county. In Delaware County the sales tax rate is 6%.

Answer 1

Using proportions, we have that:

A. The tax on the video game is of $1.62 more than on the book.

B. Her total bill would be of $98.55.

What is a proportion?

A proportion is a fraction of total amount.

Item A:

The total amount is the prices, while the fraction is the sales tax of 6%.

The price of a book is of $12.99, hence the sales tax is of:

0.06 x 12.99 = $0.78

The price of a video game is of $39.99, hence the sales tax is of:

0.06 x 39.99 = $2.40

$2.40 - $0.78 = $1.62.

The tax on the video game is of $1.62 more than on the book.

Item B:

The total price is of:

12.99 + 2 x 39.99 = $92.97

Considering the sales tax, the total bill is 106% of that, hence:

1.06 x 92.97 = $98.55.

Her total bill would be of $98.55.

You can learn more about proportions at brainly.com/question/24372153