Two persons starting from the same place walk at a rate of 5kmph and 8kmph respectively. What time will they take to be 27km apart, if they walk in the same direction?
Choose the correct choice:
A) 17 hrs B) 9 hrs C) 25 hrs D) 12 hrs E) 14 hrs
The relative speed of the boys = 8kmph â€“ 5kmph   = 3 kmph   Distance between them is 27 km   Time= 27km / 3 kmph = 9 hrs   Answer : 9 hrs.
<result>B</result>
Two persons starting from the same place walk at a rate of 5kmph and 8kmph respectively. What time will they take to be 27km apart, if they walk in the same direction?