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25 September, 17:41

To become a member of an ice skating rink, you have to pay a $30 membership fee. The cost of admission to the rink is $5 for members, and $7 dollars for nonmembers. After how many visits to the rink is the total cost for members, including for membership fee, the same total cost for nonmembers?

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  1. 25 September, 17:48
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    30 = 5 (m) + 7 (n)

    5 (a) + 30 = 7 (a)

    (a) is the number of visits!

    15 = (a)

    5 (15) = 75 + 30 = 7 (15) = $105
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