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X can finish a work in 3 days less than that of Y, X alone worked for 4 days and the remaining work was completed by Y. If the whole work took 14 days, in how many days can X and Y alone complete the work ?

D. 12, 15
Posted in:  Time & Work -  Aptitude -  Mathematics

Sound travels at 330 meters a second.
How many kilometers away is a thunder cloud when it`s sound follow the flash after 10 seconds ?

A. 3.3
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If a + b + c = 0, then the value of (a2/bc + b2/ca + c2/ab) is :

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

(x29 - x25 + x13 - 1) is divisible by:

B. (X - 1) BUT NOT BY (X + 1)
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

A is thrice as good as B and can finish a work in 60 days less than that of B. If they work together, in how many days work will be completed ?

C. $22{1/2}$ DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics