Zoe goes out to lunch. The bill , before tax and tip, was $11.70.
A sales tax of 9% was added on. Zoe tipped 13% on the
amount after the sales tax was added. How much was the
sales tax? Round to the nearest cent.

$60

Step-by-step explanation:

To find how much Zoe paid before the sales tax and tip, we first need to consider the amount she paid in sales tax and tips.

Sales tax  + Tips = $18.60

Let x = original price

Sales tax = 11% * original price

Sales tax = 0.11 * x

x= 0.11x

Tips = 20% * original price

Tips = 0.20 * x

x = 0.2x

Now that we have a value for both the sales tax and tips, we can then proceed to find the original price by:

0.11x + 0.2x = 18.60

0.31x = 18.60

Now we need to divide both sides by 0.31 to find x.

x = 60

Zoe's dinner before the sales tax and tips was $60.

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Step-by-step explanation:

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78.59 is the mean

step-by-step explanation: