# Including a 7% sales tax, an inn charges $147.66 per night. Find the inn's nightly cost before tax added.?

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- KrishnamurthyLv 74 months ago
Including a 7% sales tax, an inn charges $147.66 per night.

(147.66/1.07)

The inn's nightly cost before tax added is $138.00.

- llafferLv 74 months ago
If there is a 7% tax, then if "x" is the pre-tax price, then the post-tax price is:

y = 1.07x

So what's the pre-tax cost if the post-tax cost is $147.66? Solve for x:

147.66 = 1.07x

147.66 / 1.07 = x

x = $138

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