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28 October, 03:19

A pack of gum costs 75 cents. That is 3 cents less than three times what the pack cost 20 years ago. Which equation could be used to find the cost of the gum 20 years ago?

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Answers (2)
  1. 28 October, 06:19
    0
    The most easy way is to keep on minusing the no by 3. if u want to know a simple method
  2. 28 October, 06:52
    0
    (.75 +.03) / 3=X

    .75 is the cost now. You need to add 3 cents to get it to 3x the cost 20 years ago then divide that total by 3 to get the cost 20 years ago.
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