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3 years ago

8

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 use

d to find the cost of the gum 20 years ago?

2 answers:

Ierofanga [76]3 years ago

5 0

75=3c-3
(c stands for cost 20 years ago)

Alexandra [31]3 years ago

3 0

Let's assume the cost 20 years ago equals x

3x - 3 = 75

or

x = 75 / 3 + 3

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