Point A is moving along 32 inch circle at a rate of 8 inches per second. Two seconds after A starts, point B moves from the same starting point on the circle at 12 inches per scond. What is the shortest time that B could take in order to coincide with A?
Choose the correct option
A) 4 seconds
B) 3 seconds
C) 2 seconds
D) 1 second
E) 0.8 seconds
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 4 seconds   2)both moving in opposite direction then time would be 0.8 seconds   as we need the shortest time it would be the second case   Answer:0.8 seconds
<result>E</result>
Point A is moving along 32 inch circle at a rate of 8 inches per second. Two seconds after A starts, point B moves from the same starting point on the circle at 12 inches per scond. What is the shortest time that B could take in order to coincide with A?