A worker suffers a 20% cut in his wages.  He may regain his original wages by obtaining a rise of how much percent?

20% 22.5% 27.5% 25%

25%

20% = \(\frac{1}{5}\) ATQ,             Original  :   New -20% ⇒       5     :     4 To get the original value(5), we need to increase new value(4) by 1. So, Increased percent = \(\frac{1}{4}\) = 25%