Answer:
$14.20 was the price of her dinner before sales tax and tip.
Explanation:
Zoe paid $18.60 in sales and tips for dinner.
Sales tax rate is 11% and she tipped 20%.
As we know Total payment of the dinner = Original price of dinner + tip + taxes
Let Zoe paid x rupees without taxes and tips.
So tips she paid = 11% of x = x(0.11)
And Taxes on the original price = 20% of x = x(.20)
Now total payment she made = x + 0.11x + 0.2x
18.60 = 1.31x
x = $14.20
Therefore, $14.20 was the price of her dinner before sales tax and tip.