Ajith and Rana walk around a circular course 115 km in circumference, starting together from the same point. If they walk at speed of 4 and 5 kmph respectively, in the same direction, when will they meet ?
Choose the correct choice from the following answers.
A) after 20 hours
B) after 115 hours
C) after 115 minutes
D) after 20 minutes
E) after 30 minutes
Rana is the faster person. He gains 1 km in 1 hour. So Rana will gain one complete round over   Ajith in 115 hours. i.e. they will meet after 115 hours.   ANSWER:after 115 hours
<result>B</result>
Ajith and Rana walk around a circular course 115 km in circumference, starting together from the same point. If they walk at speed of 4 and 5 kmph respectively, in the same direction, when will they meet ?