500
Yolanda was 8 seconds behind the leader after one lap of a two-mile track race. The same person led the race the whole way and won it. here is how Yolanda lost or gained time on the leaders in each of the remaining laps: lost 9 seconds, lost 3 seconds, gained 1 second, gained 2 seconds, gained 5 seconds, lost 3 seconds, gained 13 seconds. How many seconds behind the leader did Yolanda finish?
Y-8 + (-9) + (-3) + 1 + 2 + 5 + (-3) +13 = -2
Yolanda finished 2 seconds behind the leader.