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
Let the distance between points A and B = x km
∴ Distance between Points B and C = (x+4)km
Downstream speed of the boat = 14 +2 = 16 km/h
Upstream speed of the boat = 14-2 = 12 km/h
According to question,
x+4/12-x/16=1
4x+16-3x=48
x=32 km
∴ Distance between points B and C
= x+4 = 32+4
=36 km
Directions (next five questions) : Refer to the pie chart and answer the given questions.
Percentage of Associate Professors in different Universities in the year January 2013 Total number =300
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)
In the year 2014, equal number of Associate Professors merged from University B and D. If the resultant respective ratio between the number of Associate Professors in University B and that in University D is 8:7, What is the number of Associate Professors who merged from University B in 2014
