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11 March, 20:20

A charity bingo game cost $2 per round and has a $13 entry fee for an adult. it cost $3 per round and $10 entry fee for a child. for how many rounds of bingo are the costs the same for an adult and child?

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  1. 11 March, 20:49
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    Y=2x+13

    y=3x+10

    2x+13=3x+10

    -2x - 2x

    13=x+10

    -10 - 10

    3=x

    y=2x+13

    y=2 (3) + 13

    y=19

    After 3 rounds the cost for an adult and a child will be the same, $19.
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