math

at the concert, seated tickets cost M and standing tickets cost N. The seated tickets are three times the price of a standing ticket. If 200 seating tickets are sold and 100 standing tickets and the total receipts from the concert is $2100, find the price of seated ticket.

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  1. m=3n

    200 m + 100 n = 2100

    so
    200(3n) + 100 n = 2100
    700 n = 2100
    n = 3
    so m = 3n = 9

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