Question

What is the percent change of 20 to 40?

Answer 1

initial value =20

changes ,=40-20=20

change in percent =20/20×100%=100%

Answer 2

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Percentage is one of the basic ratio systems which obeys all algebraic laws.

Therefore Percent change of 20 to 40 is given by algebraic expression,

Percentage Change = 40-20

=20 %

Therefore there is 20% change between intial and final values of percentage

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