Shailendra P. answered 01/30/18
Tutor
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Physics and Mathematics Tutor (B. Tech. from I.I.T. India)
Tiger's speed after 10 sec = 10 + 4*10 = 50 m /sec
Crook's speed after 8 sec = 10 + 5*8 = 50 m / sec
Both have same final speeds.