SOLUTION: A 12 pack of pencils costs $3.00. What is the sales tax rate if the total cost of the pencils is $3.21?

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Question 290550: A 12 pack of pencils costs $3.00. What is the sales tax rate if the total cost of the pencils is $3.21?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3.21-3.00=21
21/300=7/100=7%