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Station 1, Station, 2 and station 3 are three towns on a river which flows uniformly. Station 2 is equidistant from station 1 and station 3. A man rows a boat from station 1 to station 2 and back in 17 hours. He can row from station 1 to station 3 in 7 hours. Find the ratio between the speed of boat in still water to the speed of flow of water?
There is only one rail track between stations A and B on a railway line. One hour after the northbound superfast train N leaves station A for station B, the southbound passenger train S reaches station A from station B. The speed of superfast train is twice that of express train E, while the speed of passenger train S is half of that of train E. On some one day train N leaves from station A to station B 20 minutes late than its usual schedule. Both Train N and Train S have increased their speed to maintain the schedule as per the table. If the superfast train doubles its speed, then what should be the ratio (approximately) of the speed of the passenger train to the speed of the superfast train so that the passenger train reaches the station on that day at the exact scheduled time.
Police station in 12 km to the East of Fire station. Fire station is 9 km to the North of hospital. What is the shortest distance between hospital and Police station?
Two trains , X and Y, started simultaneously form opposite ends of a 100 mile route and traveled toward each other on parallel tracks. Train x , travelling at a constant rate, completed the 100 mile trip in 5 hours, Train Y, travelling at a constant rate , completed the 100 mile trip in 3 hours .How many miles had Train X traveled when it met Train Y?
B starts 4.5 minutes after A from the same point, for a place at a distance of 3.5 miles from the starting point. A on reaching the destination turns back andwalk a mile where he meets B. If A's speed is a mile in 6 minutes then B's speed is a mile in ____ minutes?
B starts 4 minutes after A from the same point, for a place at a distance of 7 miles from the starting point. A on reaching the destination turns back andwalks a mile where he meets B. If A's speed is a mile in 8 minutes then B's speed is a mile in ____ minutes.
Statement: A video by Chinese police giving advice on how to deal with a knife attack has gone viral. While suggesting what to do in the event of an attack, an officer responds by running away and screaming, "Help! Police officer!". Which of the following objection(s) may not be a probable reason(s) for the above-taken step by the Chinese police? I. It reportedly was aimed at telling citizens they should not seek the help of authorities when confronted by an attacker. II. It reportedly was aimed at telling citizens they should seek the help of authorities when confronted by an attacker. III. It reportedly was aimed at telling citizens they should divert the attacker by screaming and then attack the attacker. IV. It reportedly was aimed at telling citizens they should seek the help of police to nab the attacker and then attack him with the help of police authorities.
A thief sees a jeep at a distance of 250 m, coming towards him at 36 km/h. Thief takes 5 seconds to realize that there is nothing but the police is approaching him by the jeep and start running away from police at 54 km/h. But police realise after 10 second, when the thief starts running away, that he is actually a thief and gives chase at 72 km/h. How long after thief saw police did catchup with him and what is the distance police had travel to do so?
Give the correct answer - Where the licensing authority prior to grant of licence to any person under the Arms Act, calls for a report about the person from the concerned police station but the police station did not send the police report in the prescribed time. Then-
A bus moves from station A towards station B, which is at a distance of 189 km. An hour later, a car, the ratio of whose speed with the bus is 3 ∶ 2, starts from station A and moves towards station B. Find the speed of the bus (in km/h), if the car arrives at station B in half an hour earlier than the bus.