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21 August, 09:55

Tickets for the school concert were 3$ and 2$. If 245 tickets were sold for a total of $630, how much of each kind were sold?

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  1. 21 August, 11:53
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    2x + 3y = 630

    x + y = 245 then you want to get rid of x so in the second equation * by - 2 and get - 2x - 2y = - 490 subtract this equation from the first to get y=$140 substitute 140 in for y and get x = $105 and 2x=210 and 3y=420 210 + 420=630
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