A tortoise was walking on a 700-feet circular path in a garden at a rate of 100 feet per hour. One hour after the tortoise started, a hare started running from the same starting point on the path at 200 feet per hour. What is the shortest time that the hare could need in order to catch up with the tortoise?	Choose the correct choice:
A) 1 hour  B) 2 hours  C) 2.5 hours  D) 3 hours  E) 4 hours
we don't need to assume here the direction.we need to find which will take less time   so there are 2 cases   1)both moving in same direction...then time would be 1 hour   2)both moving in opposite direction then time would be 2 hours   as we need the shortest time it would be the first case.   Correct answer is 1 hour
<result>A</result>
A tortoise was walking on a 700-feet circular path in a garden at a rate of 100 feet per hour. One hour after the tortoise started, a hare started running from the same starting point on the path at 200 feet per hour. What is the shortest time that the hare could need in order to catch up with the tortoise?