Question

Including a 5% sales tax, an inn charges $189 per night. Find the inn's nightly cost before the tax is added.

The inn's nightly cost before tax is added is

Answer 1

180

Explanation:

Nightly cost = x

x × 5% = Sales Tax

Total Cost : Percentage

189 : 105%

x : 100%

Cross multiply:

189 × 100% = 105% × x

189 = 1.05x

189 ÷ 1.05 = x

x = 180