Wipro Company Numerical Ability Time Distance and Speed

It takes 9 hours by train to travel a certain distance. If on the return trip a train is taken which runs 9 kmph faster than the first and it does it in 3/4th of the time it took the first train, how fast is the first train?

a. 21
b. 27
c. 18
d. 24

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Wipro Other Question

Concentrations of three wines A, B and C are 10, 20 and 30 percent respectively. They are mixed in the ratio 2: 3 : x resulting in a 23% concentrated solution. Find x.

a)7
b)6
c)5
d)4
20 per cent of the population is affected with measles, x per cent with malaria. 40 per cent of the population has no disease. What per cent of the population has malaria? Assume there is no disease other than measles and malaria.

a. 30%
b. 40%
c. 50%
d. 60%