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10 May, 02:28

A pack of gum costs 50 cents. That is 4 cents less than four times what the pack cost 15 years ago.

Write an equation that could be used to find the cost of the gum 15 years ago.

Then solve and find the price of gum 15 years ago

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Answers (1)
  1. 10 May, 02:51
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    Y = (x+4) / 4 where y represents the amount fifteen years ago and x represents the current price.

    y = (50+4) / 4

    y = 13.5
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