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24 February, 19:58

At the movie theatre, child admission is $6.50 and adult admission is $9.80. On Saturday, 153 tickets were sold for a total sales of $1222.20. How many child tickets were sold that day?

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  1. 24 February, 23:17
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    C + A = 173

    6.50 * C + 9.80*A = 1368.70

    Solves the first equation for C and multiplies the second equation by 10 to clear the decimals:

    C = 173 - A

    65C + 98A = 13687

    65 (173 - A) + 98A = 13687

    11245 - 65A + 98A = 13687

    33A + 11245 = 13687

    33A = 13687 - 11245

    33A = 2442

    A = 74

    C = 99
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