Bert and Ernie start running around a circular track at the same time. Bert starts at the easternmost point and runs counterclockwise completing one lap in 50 seconds. Ernie starts at the southernmost point and runs clockwise completing one lap in 60 seconds. Required:
a. Give the first time, in seconds, when Bert and Ernie meet.
b. If Bert is running at 5 ft/sec, then how far (in a straight line) is Ernie from his starting point after 100 seconds?