A tiger can run at approximately 100 km/hr (27.7 m/s) and a zebra at 80 km/hr (22.2 m/s). If both animals are running at full speed, with the zebra 70.0 m ahead, how long before the tiger catches its prey?
a) 12.6 s
b) 25.2 s
c) 6.30 s
d) 10.7 s