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lesantik [10]
3 years ago
14

The total cost, including tax, of a $20 mouse for a personal computer is $21. What is the sales tax rate

Mathematics
1 answer:
g100num [7]3 years ago
5 0
Without tax it costs $20.
With tax it costs $21.
The amount of tax paid is $21 - $20 = $1

$1 tax was paid on $20.

$1/$20 * 100 = 0.05 * 100 = 5%
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Answer: c. ​10

Step-by-step explanation:

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