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A number is increased by 25% and then decreased by 20%. Find the change in that number.

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A number is increased by 25% and then decreased by 20%. Find the change in that number.

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Method 1:

Let the number be x. First it is increased by 25%

Method 2:

[to understand, let us assume that number is 100]

So, first when we increase by 25%, we get

We get back 100 ⇒ No change

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