Question

while looking at some reports, a store manager notes that sweaters that retail for $10 end up costing customers %10.90 once the sales tax is added. what is the sales tax percentage?

Answer 1

Let's call the sales tax rate as t (in decimal form).

The cost of a $10 sweater with the sales tax included is $10 + $10 * t = $10.90.

We can set up an equation to solve for t:

$10 * t = $0.90

Dividing both sides by $10:

t = 0.09

So the sales tax rate is 0.09, which is equivalent to 9%.