A jogging park has two identical circular tracks touching eachother, and a rectangular track enclosing the two circles. The edges ofthe rectangles are tangential to the circles. Two friends, A and B, start jogging simultaneously from the point where one of the circular trackstouches the smaller side of the rectangular track. A jogs along therectangular track, while B jogs along the two circular tracks in a figureof eight. Approximately, how much faster than A does B have to run, so that they take the same time to return to their starting point?

A jogging park has two identical circular tracks touching eachother, a

1.	A jogging park has two identical circular tracks touching eachother, and a rectangular track enclosing the two circles. The edges ofthe rectangles are tangential to the circles. Two friends, A and B, start jogging simultaneously from the point where one of the circular trackstouches the smaller side of the rectangular track. A jogs along therectangular track, while B jogs along the two circular tracks in a figureof eight. Approximately, how much faster than A does B have to run, so that they take the same time to return to their starting point?
A.	3.88%
B.	4.22%
C.	4.44%
D.	4.72%
Answer» E.