Time and Distance on Arithmetic Aptitude related Questions and Answers

Question :   Two persons starting from the same place walk at a rate of 5kmph and 5.5kmph respectively. What time will they take to be 8.5km apart, if they walk in the same direction? 1. 17 hrs 2. 22 hrs 3. 25 hrs 4. 12 hrs Answer :   1 - 17 hrs