Two persons starting from the same place walk at a rate of 9kmph and 12.5kmph respectively. What time will they take to be 24.5km apart, if they walk in the same direction?	Choose the correct choice from the following answers
A) 7 hrs B) 22 hrs C) 5 hrs D) 12 hrs E) 16 hrs
The relative speed of the boys = 12.5kmph – 9kmph   = 3.5 kmph   Distance between them is 24.5 km   Time= 24.5km / 3.5 kmph = 7 hrs   7 hrsnswer : 7 hrs
<result>A</result>
Two persons starting from the same place walk at a rate of 9kmph and 12.5kmph respectively. What time will they take to be 24.5km apart, if they walk in the same direction?