The salary of an officer is increased by 25%. By what percent should the new salary be decreased to restore the original salary?
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Let Original Salary = 1000
After increase = 1250 ,
to go back to 1000 , decease by (1250-1000)/1250
⇒250/1250
⇒1/5
⇒20 %
After increase = 1250 ,
to go back to 1000 , decease by (1250-1000)/1250
⇒250/1250
⇒1/5
⇒20 %
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