Math

Exactly 120 tickets were sold for a concert. The tickets cost $12 each for adults, $10 each for seniors, and $6 each for children. The number of adult tickets sold was equal to the number of child tickets sold. Given that the total revenue from the tickets sales was $1100, the number of senior tickets sold was?

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  1. A+S+C=120
    12A+10S+6C=1100
    A=C

    2A+S=120
    18A+10S=1100

    multipuly top equation by 10, then subtract..

    2A=100
    A=50
    C=50
    S=20

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    bobpursley

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