Raj drives slowly along the perimeter of a rectangular park at 24kmph and completes one full round in 4mins. The ratio of length is to breadth is 3:2. What are its dimensions?

Since, the length is 3x and breadth is 2x.
Therefore,
                total distance = perimeter 
                                     =2(3x+2x)
distance=10x ;
Therefore,
               distance= speed * time 
                           = 24 * 4/60(since time is in minute)
Therefore,
              distance=10x=1.6;
So,  x=.16
Hence, length=3x=.48;  breadth=2x=.32