Wipro Company Numerical Ability Percentage

If the price of petrol increases by 25%, by how much must a user cut down his consumption so that his expenditure on petrol remains constant?
A. 20%
B. 16.67%
C. 25%
D. 33.33%
E. 30%

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Wipro Other Question

30% of the men are more than 25 years old and 80% of the men are less than or equal to 50 years old. 20% of all men play football. If 20% of the men above the age of 50 play football, what percentage of the football players are less than or equal to 50 years?
A. 70%
B. 15%
C. 80%
D. 20%
E. 90%
Hans Solo, a navy admiral, has to choose 3 ships out of his fleet of 8 destroyer ships. In how many ways can this be achieved, assuming that he is not biased toward choosing any particular ship?
A. 120
B. 48
C. 56
D. 336
E. 256