Ask Question
12 September, 09:22

A city has a population of 310,000 people. Suppose that each year the population grows by 9%. What will the population be after 13 years?

+5
Answers (1)
  1. 12 September, 09:41
    0
    Answer: 644,800

    Step-by-step explanation:

    This can also be solved using the terms of Arithmetic Progressions.

    Let the 13 years be number of terms of the sequences (n)

    Therefore;

    T₁₃ = a + (n - 1) d, where a = 310,000 and d = 9% of 310,000

    9% of 310,000 = 9/100 x 310,000

    = 27,900

    so the common difference (d)

    d = 27,900

    Now substitute for the values in the formula above and calculate

    T₁₃ = 310,000 + (13 - 1) x 27,900

    = 310,000 + 12 x 27,900

    = 310,000 + 334,800

    = 644,800.

    The population after 13 years = 644,800.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A city has a population of 310,000 people. Suppose that each year the population grows by 9%. What will the population be after 13 years? ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers