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12 July, 14:32

The cost of a ticket to an amusement park is $42 per person. for groups of up to 8 people, the cost per ticket decreases by $3 for each person in the geoup. Marco's ticket cost $30. Write and solve an equation to find the number of people in marco's group.

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  1. 12 July, 14:47
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    X is the amount of groups

    y is the amount of people

    42 - 3x = 30

    x (8) = y

    42 - 3x = 30

    -42 - 42

    -3x = - 12

    divide by - 3

    x = 4, there were 4 groups of 8, substitute the 4 into the other equation

    4*8 = 32

    y = 32, There are 32 people in Marcos group

    sorry, it's the best I could do.
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