Percentage calculation on population Shortcut Tricks

Percentage calculation on population Shortcut Tricks
Percentage is a very important chapter and it uses most chapters for calculation.Shortcut Tricks is based on, to find the population of a particular town,city in increased and decreased order that is obtain in this type of questions.we go through the shortcut tricks.



Percentage calculation on population Shortcut Tricks
Example:
If a town the present population is 52500 and it is decreased by 20% perannum .What will be its population 2 years hence.

Solution:
We know
Population after n year = P(1+R/100)n
So Here we

P = 52500
R=20% ( decreased )
n = 2 years.

Population after 2 years

Short Tricks :

= 52500 x 80/100 x 80/100
= 33600

• Percentage Type1 Shortcut Tricks
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• Percentage calculation Shortcut Tricks
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