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Llana [10]
3 years ago
6

highland has a population of 12,200. Its population been increasing at a rate of 300 poeple per year. Lowville has a population

of 21,000 and is declining by 250 people per year. Assuming the rates don't change, in how many years will the populations be equal
Mathematics
1 answer:
Amanda [17]3 years ago
3 0

Answer:

  • 16 years

Step-by-step explanation:

<u>Equation for the Highland population</u>

  • 12200 + 300x

<u>Equation for the Lowville population</u>

  • 21000 -250x

<u>Populations are equal after</u>

  • 12200 + 300x = 21000 - 250x
  • 300x + 250x = 21000 - 12200
  • 550x = 8800
  • x = 8800/550
  • x = 16 years
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