|A) 32.1 km||B) 15.23 km|
|C) 3.75 km||D) 32.1 m|
Let 'd' be the distance between A and B
K -time = d/10 + d/9 = 19d/90 hours
L -time = 2d/12 = d/6 hours
We know that, 10 min = 1/6 hours
Thus, time difference between K and L is given as 10 minutes.
=> 19d/90 - d/6 = 1/6
=> (19d-15d)/90 = 1/6
=> 4d/90 = 1/6
d= 15/4 km = 3.75 km.
hence the distance between A and B is 3.75 km.