Final answer:
Tyler took 20 seconds to arrive at the bumper cars and Lin arrived first.
Step-by-step explanation:
To find out how long it took Tyler to arrive at the bumper cars, we need to consider that Lin arrived in 20 seconds. Since Lin and Tyler left the ticket booth at the same time, we can conclude that it also took Tyler 20 seconds to arrive at the bumper cars. Therefore, the answer to part a is 20 seconds.
In terms of who arrived first, Lin arrived at the bumper cars first since both Lin and Tyler started running at the same time and Lin's arrival time was 20 seconds.