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14 July, 22:45

The members of the select chorus agree to buy at least 250 tickets for an outside concert. They buy 80 less lawn tickets than balcony tickets. What is the least amount of balcony tickets bought? Write and solve an inequality.

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  1. 15 July, 00:18
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    I: l+b>=250

    II: l=b-80

    insert/substitute II into I

    (b-80) + b>=250

    2b-80>=250

    2b>=330

    b>=165

    (-> l>=85)

    ex.

    165+85=250
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