19-04-2017
Mathematics

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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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liemonder liemonder

19-04-2017

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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