In California, state sales tax rates vary by county. In Alameda County, the sales tax rate is 8 1/2%.

A t-shirt cost $12.99, and a pair of jeans cost $39.99. Rounded to the nearest cent, how much more is the tax on the jeans than the tax on the t-shirt?

The tax is 8.5%. To find the tax on an item, multiply 8.5% by the price of the item.

t-shirt:8.5% of $12.99 = 8.5% * $12.99 = 0.085 * $12.99 = $1.10The tax on the t-shirt is $1.10

pair of jeans:8.5% of $39.99 = 8.5% * $39.99 = 0.085 * $39.99 = $3.40The tax on the jeans is $3.40

The difference in the amount of tax is

$3.40 - $1.10 = $2.30

Answer: $2.30

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Tax = 8.5%

multiply 8.5% by the price of the item

t-shirt (tax) : 8.5% of $12.99 = 8.5% * $12.99 = 0.085 * $12.99 = $1.10

pair of jeans (tax) : 8.5% of $39.99 = 8.5% * $39.99 = 0.085 * $39.99 = $3.40

the difference in tax:$3.40 - $1.10 = $2.30