A suit costs $95. Barry has a discount coupon for 10% off and the city has a 4.5% sales tax. What is the final cost of the suit?

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Answer 1 · 2017-03-30T20:08:09

Barry would pay #$89.35# for the suit.

If Barry Pays full price for the suit, that would be

#1*(95) = $95#

If he has a 10% discount (0.10) on the suit, that would be

#(1 - 0.10)*(95) = #

#(0.90) * (95) = $85.50#

Now if there is a tax of 4.5% tax rate (0.045) on the sale, that would be

#(1 - 0.045)*(85.50) = #

#(1.045)*(85.50) = $89.35#

or

Take the price of the suit and multiply by the tax rate of 45% (0.045)

#$85.50 * (0.045) = $3.85#

Then add the tax to the discounted price

#$85.50 + $3.85 = $89.35#