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28 March, 00:37

A music festival charges $54 and 95 per ticket sold on the day of the event. A ticket purchased before the festival cost only $39.95. There were only 20,000 tickets sold for a total of $925,000 how many tickets did they sell at the music festival? How many tickets did they sell before the music festival?

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  1. 28 March, 01:06
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    B=number of ticets sold before

    a=number of tickets sold after

    cost of a ticket=number of tickets times cost per ticket

    beforecost=39.95b

    aftercost=54.95a

    total cost=925000

    39.95b+54.95a=925000

    total number tickets=20000

    b+a=20000

    we have

    39.95b+54.95a=925000

    b+a=20000

    multiply second equation by - 39.95 and add to first equatin

    39.95b+54.95a=925000

    -39.95b-39.95a=-799000 +

    0b+15a=126000

    15a=126000

    divide bot sides by 15

    a=8400

    sub back

    b+a=20000

    b+8400=20000

    minus 8400 both sides

    b=11600

    11,600 tickets sold before

    8400 tickets sold after
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