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If 5x/125 = 1, the x is equal to :

D. 3
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

Twenty four children can complete a work in twelve days whereas sixteen men can complete the same work in nine days. In How many days will twelve men and twelve children comlete the same work ?

C. 8
Posted in:  Time & Work -  Aptitude -  Mathematics

The average speed of a train in the onward journey is 25% more than that in the return journey. The train halts for one hour on reaching the destination. The total time taken for the complete to and from journey is 17 hours, covering a distance of 800 km. The speed of the train in the onward journey is: 

C. 56.25 KM/HR
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If 3x - 3x-1 = 18, then the value of xx is :

C. 27
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

Find the values of k ε R subject to the following condition :
The sum of the roots of $3x^2 + kx - 2 = 0$ is 6.

B. - 18
Posted in:  Quadratic Equations -  Algebra -  Mathematics