Question

if the population of the town decreases 6.25 annually and the present population is 2048000 find it's population after 3 years​

Answer 1

Answer:

use compound interest formula when u have population

Answer 2

Step-by-step explanation:

Solution 1:

Population after 'n' years = Present Population×(1-r/100)∧n

⇒     "                          "       = 2048000×(1-6.25/100)∧3

⇒     "                          "       = 2048000×93.75/100×93.75/100×93.75/100

⇒     "                          "       = 1687500        ←ANSWER

Solution 2:

Amount = Principal×(1+r/200)∧(n*2)

⇒ 4913  = P×(1+12.5/200)∧(1.5*2)

⇒ 4913  = P×212.5/200×212.5/200×212.5/200

⇒ ∴ P     = (4913×200×200×200)÷(212.5×212.5×212.5)

⇒ ∴ P     = 4096 Rs.        ←ANSWER  

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