A thief steal a car at 2:30 pm and drive at a speed of 80 km/hr. Police came to know about thief at 3:30 pm and start chasing him with the speed of 90 km/hr. After how much kilometre police will catch the thief?
Police came to know that thief after 1 hours. So distance b/w thief and the police 80 km, now police start chasing him with a relative speed of (90-80) = 10 km/hr. Time taken by police = 80/10 = 8 hrs. Distance run by police = 90 × 8 = 720 km
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Two trains approach each other at 21 kmph and 24 kmph from 2 places 270 km apart. After how many hours they will meet?
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