Robert's salary was decreased by 20% and subsequently increased by 20%. how much percentage does he lose? Pick one: A) 4% B) 20% C) 25% D) 30% E) 50%
let original salary be $100   Salary after decreasing 20% = 100 - 100 x 20/100 = $80   Salary after increasing 20% on $80 = 80 + 80 x 20/100 = $96   Percentage of loss = 100 - 96= 
<gadget id="calculator">100 - 96</gadget>
<output>4</output>
4%   4%nswer : 4%
<result>A</result>
Robert's salary was decreased by 20% and subsequently increased by 20%. how much percentage does he lose?