the salary of an officer is increased by 20% by what percentage should the new salary be reduced to restore the original salary
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let the original salary be x
new salary =x+20percent of x
=x+20x/100
=x+x/5
=6x/5
total increased salary=new salary- original salary
=6x/5 -x
=x/5
percent of new salary,that should be reduced to get the original salary=x/5/6x/5 ×100
x/5 ×5/6x ×100
=100/6
=16.6 percent
hope it helps you
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