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A passenger sitting in a train of length l m, which is running with speed of 60 km/h passing through two bridges, notices that he crosses the first bridge and the second bridge in time intervals which are in the ratio of  7: 4 respectively. If the length of first bridge be 280 m, then the length of the second bridge is: 

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Important Questions on Time, Speed and Distance

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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 7
Pathik and Rahi started from two places Andheri and Bhavnagar towards Bhavnagar and Andheri respectively at 8:20 am. The speeds of Pathik and Rahi are in the ratio 4:5.They meet at Chandni Chowk, somewhere between Andheri and Bhavnagar, spent some time together for coffee and burger and then both started towards their destination at 9:27 am. If Pathik reaches Bhavnagar at 10:32 am, how much time did they spend together?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 8
A train with 120 wagons crosses Arjun who is going in the same direction, in 36 seconds. It travels for half an hour from the time it starts overtaking the Arjun (he is riding on the horse) before it starts overtaking Srikrishna (who is also riding on his horse) coming from the opposite direction in 24 seconds. In how much time (in seconds) after the train has crossed the Srikrishna do the Arjun, meets to Srikrishna?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 10
Due to the technical snag in the signal system, two trains start approaching each other on the same rail track from two different stations, 240 km away from each other. When the train starts a bird also starts moving to and fro between the two trains at 60 km/h touching each time each train. The bird is initially sitting on the top of the engine of one of the trains, and it moves so till these trains collide. If these trains collide one and a half-hour after the start, then how many kilometres does the bird travel till the time of collision of trains?  
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 11
Einstein walks on an escalator at a rate of 5 steps per second and reaches the other end in 10 seconds. While coming back, walking at the same speed he reaches the starting point in 40 seconds. What is the number of steps on the escalator ?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 12
A girl while walking diametrically across a semicircular playground takes 3 minutes less than if she had kept walking around the circular path from A to B. If she walks 60 metres a minute, what is the diameter of the playground?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 14
A surveillance plane is moving between two fixed places Pukhwara and Kargil at 120 km/h. The distance between two places is 600 km. After 18 hour what will be the distance between the Kargil and its position if it is starts moving from Pukhwara?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 15
The speed of a car during the second hour of its journey is thrice that in the first hour. Also its third hours speed is the, average speed of the first two hours. Had the car travelled at the second hours speed during all the first three hours, then it would have travelled 150 km more. Find the percentage reduction in time in the second case for the first three hours :
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 16
There are three runners Tom, Dick and Harry with their respective speeds of 10 km/h, 20 km/h and 30 km/h. They are initially at P and they have to run between the two points P and Q which are 10 km a part from each other. They start their race at 6 am and end at 6 pm on the same day. If they run between P and Q without any break, then how many times they will be together either at P and Q. during the given time period?