Free Online Preparation for CAT 2009 with Minglebox e-CAT Prep. Cover basic concepts of Time and Distance under Quantitative Aptitude for MBA Entrance Exam Preparation with Study material, solved examples and tests prepared by CAT coaching experts.

 

Speed is the rate at which distance is covered by a moving body these speed

's' = or

s =

if speed is constant then

if distance is constant then

if time is constant then

 

 

Average speed. If a body cover half of the distance 'd' it a speed of and  the half at speed then average speed is given by

= =

 

 

The time taken by a train of length 'l' moving with speed 's' to pare a pole is

=

Time taken by train of length 'l' moving with speed 's' to completely pare a platform of

length 'd' =

Time taken by strain of length 'l' moving with speed to par another train of length 'd' moving with speed in the direction (provided

) =

Time taken by a train, of length l, and moving with speed to pan another train of length 'd' moving with in the opposite direction

If person covers a certain distance 'd' moving speed and taking time , then the person covers the same distance moving at speed

 and taking time then

 

If two persons X and Y start at the same time in opposite direction from two places and arrive at their respective destination in x an y hours later after having met on their on their way then

 

If speed of boat, in still water is 'a' (m/s) then speed of boat in going down stream in a river which is following at 'b' (m/s) is (a+b) m/s. Hence if a boat cover a certain distance 'd' downstream and then reruns it to its staring point covering the same distance 'd' then

       

 

 

If 2 persons say a,b start running a race on a circular track, then the faster runner (say A) will be together with the slower runner for the
first time when faster runner has gained one complete length of the track or round over the slower runner.