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Jen butler has been pricing Speed Pass train fares for a group trip to New York. Three adults and four children must pay $97. Two adults and three children must pay $69. Find the price of the adult ticket and price of a child’s ticket.

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2 answers

  1. 3 a + 4 c = 97
    2 a + 3 c = 69

    6 a + 8 c = 194
    6 a + 9 c = 207
    --------------------- subtract
    - c = - 113
    c = 113
    go back for a

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  2. whoops typo, c= 13

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