Two persons starting from the same place walk at a rate of 0.5kmph and 5.5kmph respectively. What time will they take to be 75km apart, if they walk in the same direction?
Choose the correct choice from the following choices:
A) 17 hrs	B) 22 hrs	C) 25 hrs	D) 12 hrs	E) 15 hrs
The relative speed of the boys = 5.5kmph â€“ 0.5kmph   = 5 kmph   Distance between them is 75 km   Time= 75km / 5 kmph = 15 hrs   Answer : 15 hrs.
<result>E</result>
Two persons starting from the same place walk at a rate of 0.5kmph and 5.5kmph respectively. What time will they take to be 75km apart, if they walk in the same direction?