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  1. A worker suffers a 20% cut in his wages. He may regain his original wages by obtaining a rise of
    1. 27.5%
    2. 25.0%
    3. 22.5%
    4. 20.0%
Correct Option: B

Here , r = 20%
We can find the required answer with the help of given formula ,

Required percentage of increase =
r
× 100
100 - r

Required percentage of increase =
20
× 100
100 - 20

Required answer =
20
× 100 = 25%
80



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