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Examveda

The population of village is 1,00,000. The rate of increase is 10% per annum. Find the population at the start of the third year?

A. 1,33,100

B. 1,21,000

C. 1,18,800

D. 1,20,000

E. None of these

Answer: Option B

Solution(By Examveda Team)

100000 == 10%↑(1st year) ==> 110000 == 10%↑(2nd year) ==> 121000
Population at starting of 3rd year = 121000

[By using net percentage change method, we have saved our self from cumber some formulas on population which is based on compound interest].

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Comments ( 1 )

  1. Prathap D
    Prathap D :
    2 years ago

    10% = 1/10. 10..... 11... For 1'st yr
    10......11....for 2nd year
    *- - - - *- - - -
    100. 121
    100--->100000. Then
    121...... = 121000

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