3. A number is increased by 20% successively for three times. By what percent
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Answer:
Let the original number be 100.
An increase of 20% followed by another increase of 20%
=
100
120
×
100
120
×100=144
∴ Required decrease = 44 Required % decrease =
144
44
×100%
=
9
275
%=30
9
5
%
Step-by-step explanation:
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