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

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

B. X - 2

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

If (x + 1/x) = 2, then (x31/x3) is equal to :

D. 2

If x men can do a piece of work in 8 days and (x+4) men can do the same work in 6 days, then x is equal to

C. 12
Posted in:  Time & Work -  Aptitude -  Mathematics