Abc office supply offers an electric typewriter for $129.95. if abc received a 15% markup on cost by selling the typewriter at this price, what was the cost of the typewriter to abc?

A 15% percent markup means that the typewriter cost was increased by 15%, or 0.15 by moving the decimal 2 places to the left. If the original price was x, and 15% of it is 0.15*x, we can add them up to get 1.15*x=129.95. Dividing both sides by 1.15, we get x=113 dollars

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