Answer:
The amount of sales tax was $6.81
Step-by-step explanation:
The selling price of the lamp is = $97.50
This price included the 7.5% sales tax.
Let the original price be x
This means \(x+(0.075\times x)=97.50\)
\(x+0.075x=97.50\)
\(1.075x=97.50\)
x=90.69
The original price was $90.69
And to know how much was the tax amount we will subtract the original price from selling price.
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So, the amount of sales tax was $6.81
