Wipro Company Numerical Ability Permutation and Combination

A man’s wages was reduced by 50%. Again the reduced wages was increased by 50%. Find out the percentage effect on his salary.
A)Remains same B)Increases by 50%
C)Decreases by 50% D)Decreases by 25%

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Wipro Other Question
A man’s income was reduced by 10%. How much percent it must now be raised so that it may be equal to the original amount?
A)11 % B)12% C)15% D) 16 % In June a baseball team played 60 games and won 30% of them. After a phenomenal winning streak this team raised its average to 50%. How many games must the team have won in a row to attain this average?
A. 30
B. 24
C. 12
D. 20
E. 26