The population of a village has increased annually at the rate of 25%. If at the end of 3 years it is 10000, the population in the beginning of the first year was :
A. 5120
B. 5000
C. 4900
D. 4500
Answer: Option A
Solution(By Examveda Team)
25% = $$\frac{1}{4}$$\[\begin{gathered} {\text{Initial }}\,\,\,\,\,\,{\text{Final}} \hfill \\ \,\,\,4\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,5 \hfill \\ \,\,\,4\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,5 \hfill \\ \,\,\,4\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,5 \hfill \\ \overline {\,\,\,\,\,\,64\,\,\,\,\,\,\,\,\,\,125\,\,\,} \hfill \\ \end{gathered} \]
⇒ 125 units = 10000
⇒ 1 unit = 80
⇒ 64 units = 5120
⇒ Population at the beginning of 1st year = 5120
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Related Questions on Percentage
A. $$\frac{1}{4}$$
B. $$\frac{1}{3}$$
C. $$\frac{1}{2}$$
D. $$\frac{2}{3}$$
How do you get the initial and final?