At what time did X catch the thief?
Explanation:
Since the policeman started 15 min late, in this time the thief would have already covered 604 = 15 km. To catch the thief, the policeman will have to make up for this distance of 15 km. Every hour the policeman is travelling (65 – 60) = 5 km more than the thief. Hence, to make up the distance of 15 km, he would take 3 hr. Since policeman started at 12.15 p.m., he would catch the thief at 3.15 p.m.
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