Andrea ordered a computer on the Internet. The computer cost $1,399 plus 6.5% sales tax. What was the total amount Andrea paid for her computer?

1 Answer
Feb 3, 2018

See a solution process below:

Explanation:

The formula for determining the cost of an item after tax is:

#t = p + (p * r)#

Where:

#t# is the total price paid: what is being solved for in this problem.

#p# is the price of the item: $1,399 for this problem.

#r# is the tax rate: 6.5% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 6.5% can be written as #6.5/100#.

Substituting and calculating #t# gives:

#t = $1399 + ($1399 * 6.5/100)#

#t = $1399 + ($9093.5/100)#

#t = $1399 + $90.94#

#t = $1489.94# rounded to the nearest cent.