The population of a city increases at the rate of 10% every year. If the present population of the city is 60, 000 persons, how many persons would be added to it in three years ?
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rate of population - 10 %
in three (3) years - rate after 3 years will be 30 % - (10 x 3)%
we will follow the percentage formulae - 30 % / 100 x 60,000
which will be displayed in the notebook like this -
30
--- x 60,000
100
6000 x 3
18000
30
=== x 18000
100
180 x 30
5400
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