Two persons starting from the same place walk at a rate of 5kmph and 7kmph respectively. What time will they take to be 24km apart, if they walk in the same direction?  Choose the correct answer
A) 17 hrs  B) 22 hrs  C) 25 hrs  D) 12 hrs  E) 14 hrs
The relative speed of the boys = 7kmph â€“ 5kmph   = 2 kmph   12 hrsistance between them is 24 km   Time= 24km / 2 kmph = 12 hrs   Answer : 12 hrs.
<result>D</result>
Two persons starting from the same place walk at a rate of 5kmph and 7kmph respectively. What time will they take to be 24km apart, if they walk in the same direction?