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 A can complete a journey in 19 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/hr. Find the total journey in km.

D. 224 KM
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

Let f(x) = x3 - 6x2 + 11x - 6.
Then, which one of the folllowing is not a factor of f(x) ? 

C. X + 3
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

The Polynomial (x4 - 5x3 + 5x2 - 10x + 24) has a factor as :

B. X - 2
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

A report of 100 pages is to be typed by three typists.
Typist A can type 100 pages in 10 hours.
Typist B can type the same pages in 20 hours. and 
Typist C can type in 25 hours,
All the three typist started typing at 09:00 A.M. At 01:00 P.M., Typist A stopped typing. The other two typist finished the job Approximately at what time the report was typed ?

B. 03:40 P.M.
Posted in:  Time & Work -  Aptitude -  Mathematics

The quadratic equation whose roots are twice the roots of $2x^2 - 5x + 2 = 0$ is :

B. $X^2 - 5X + 4 = 0$
Posted in:  Quadratic Equations -  Algebra -  Mathematics