1. A thief, after committing the burglary, started fleeing at 12 noon, at a speed of 60 km/hr. He was then chased by a policeman X. X started the chase, 15 min after the thief had started, at a speed of 65 km/hr.At what time did X catch the thief?
 





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  • By: anil on 05 May 2019 02.32 am
    Time taken to catch the thief = $$frac{d}{v}$$  (Where d is relative distance achieved in 15 min. = 15km. and v is relative velocity of poiliceman i.e. = 65-60 = 5 kmph)
    So time taken = 3hr.
    Hence he will catch thief at 3:15 pm
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