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Alice earns a monthly salary of $315 plus a commission on her total sales. Last month her total sales were $9640, and she earned a total of $1182.60. What is her commission rate?

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sqdancefan

Answer:

  9%

Step-by-step explanation:

The amount of Alice's commission is the product of the commission rate (r) and the total sales. Her earnings will be the sum of her salary and the amount of commission:

  1182.60 = 315 +9640×r

  867.60 = 9640r . . . . . . . . subtract 315

  0.09 = r . . . . . . . . . . . . . . . divide by 9640

Alice's commission rate is 9%.

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