math

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Identify the base in the following application:

The sales tax rate in a state is 7.5%. If you pay a tax of \$17.50 on an item that you purchase, what is its selling price?

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How do YOU think this problem could be solved? What do YOU think is the answer?

• math -

\$100 : \$7.5
x : \$17.5

x = \$100*17.5/7.5 = \$233.33

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