Management Aptitude Test Feb 2012 Paper

Question : 97 of 200

Marks: +1, -0

During one year, the population of a town increased by 5% and during the next year, the population decreased by 5%. If the total population is 9975 at the end of the second year, then what was the population size in the beginning of the first year?

9000
9500
10000
10500

Validate

Solution:

(3) Let required population size be N. Then,
N

(1 +5/100 )

(1 -5/100 )

= 9975
N

(1 +1/20 )

(1 -1/20 )

= 9975
⇒ N x

21/20×19/20

= 9975
⇒ N = 10000

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