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expeople1 [14]
3 years ago
10

Please do number 23.

Mathematics
1 answer:
liraira [26]3 years ago
5 0

Answer:

  165

Step-by-step explanation:

Let o and b represent the numbers of orchestra and balcony tickets bought, respectively.

  o + b ≥ 250 . . . . at least 250 tickets will be bought

  o = b - 80 . . . . .  there will be 80 fewer orchestra than balcony bought

Substituting for o, we have ...

  (b -80) +b ≥ 250

  2b ≥ 330 . . . . . . . add 80

  b ≥ 165 . . . . . . . . .divide by 2

The least number of balcony tickets the club could buy is 165.

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