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Debra received a $70 gift for a coffee store. She used it in buying some coffee that coast $7.64 per pound. After buying the coffee, she $31.80 left on her card. How pounds of coffee did she buy?

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sqdancefan

Answer:

  5

Step-by-step explanation:

If c represents the number of pounds of coffee Debra bought, her total value is ...

  7.64c +31.80 = 70

  c = (70 -31.80)/7.64 = 5 . . . . solve for c

Debra bought 5 pounds of coffee.