Question

what percent decrease in salary would exactly cancel out the 20% increase

Answer 1

let the salary be 100
increased salary=120
so decrease percent =20/120 ×100
=50/3 %
16 2/3 %

Answer 2

assume the original salary Rs. 100

increase= 20% i.e. 120

decrease percent= 20/120×100

=16 2/3%

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hope it helped☺️