10 men can complete a piece of work in 6 days and 6 women can complete the same piece of work in 12 days. In how many days will 15 men and 10 women together complete the work

The speed of a boat in still water is 14 km/h and the speed of the current is 2 km/h. The time taken by the boat to travel from point A to point B downstream is 1 hour less than the time taken to the same boat to travel from point B to point C upstream. If the distance between points A and B is 4 km less than that between points B and C, what is the distance between points B and C

The total number of Associate Professors in Universities C and F together is what percent more than the number of Associate Professors in University A

What is the average number of Associate Professors in Universities A, C and E

In January 2013, 24% of the Assistant Professors in University E were promoted to Associate Professors, If University E had 54 professors in December, 2012, what was the number of assistant professors in December 2012? (Note : No Associate Professor was recruited and no Assistant Professor left University E in the same time.)

What is the central angle  corresponding to the number of Associate Professors in University F ? (in degrees)