The population of a village has increased annually at the rate of 40%. If at the end of 3 years it is 6860 the population in the beginning of the first year was?
Answer & explanation
Correct answer: option 3
Let the population in starting = P
40% = \(\frac{2}{5}\)
ATQ,
⇒ P × \(\frac{7}{5}\) × \(\frac{7}{5}\) × \(\frac{7}{5}\) = 6860 (After 3 year)
⇒ P = 6860 × \(\frac{5}{7}\) × \(\frac{5}{7}\) × \(\frac{5}{7}\)
⇒ P = 2500