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Rebecca paid $16.90 to place an advertisement in a local newspaper. The total cost is determined by a $4.50 set up cost and a $0.40 per word cost. How many words were in Rebecca's advertisement?

Rebecca paid $16.90 \$ 16.90 to place an advertisement in a local newspaper. The total cost is determined by a $4.50 \$ 4.50 set up cost and a $0.40 \$ 0.40 per word cost. How many words were in Rebecca's advertisement?

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Q. Rebecca paid $16.90 \$ 16.90 to place an advertisement in a local newspaper. The total cost is determined by a $4.50 \$ 4.50 set up cost and a $0.40 \$ 0.40 per word cost. How many words were in Rebecca's advertisement?
  1. Subtract setup cost: Subtract the set up cost from the total cost to find the cost of the words alone.$16.90−$4.50=$12.40\$16.90 - \$4.50 = \$12.40
  2. Divide cost by per word: Divide the cost of the words by the per word cost to find the number of words.\newline$12.40/$0.40=31\$12.40 / \$0.40 = 31

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