Question

A number is first increased by 20% and then decreased by 20% find increased or decreased percent​

Answer 1

=> Let the number  be 100

In 1st condition,

 Increase = 20% of 100

=> 20/100 × 100

=> 20

∴  Number after this increase = 100 + 20

=> 120

In 2nd condition :-

Decrease = 20% of  120

=> 20/100 × 120

=> 24

∴  Number after this decrease = 120 – 24 = 96 

⇒ Total decrease on the whole = 24 – 20 = 4

And the percentage decrease on the whole = 4/100 × 100

=> 4%

I hope this will help you dear..

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