Ahome improvement store sold wind chimes for $30 each. a costumer signed up for a free membership card and recieved a 5% discount off the price. sales tax of 5% was applied after the disscount. what was the final price of the windchime? show your work.

The discount is 5% that means you find 5% of 30 and take from 30
(5/100)*30 = 1.50 dollars
30 - 1.50 = 28.50

Now you put the tax on

28.50 * 1.05 = 29.93
Notice 2 things.
multiply by 1.05 will put on a the sales tax plus the cost of the item (a short cut) and
taking off 5% does not come to the same thing when you add the 5% back on which is the point of the question. 

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