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13 October, 02:03

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. 13 October, 03:10
    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.
  2. 13 October, 04:30
    0
    The most easy way is to keep on minusing the no by 3. if u want to know a simple method
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