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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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Important Questions on Time, Speed and Distance

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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?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 19
Priyanka, Akshay and Salman started out on a journey to watch the newly released movie "Mujhse Shaadi Karogi", which was being shown at wave cine-multiplex. The multiplex was120 km away from their starting point of journey. Priyanka and Salman went by car at the speed of 50km/h, while Akshay travelled by Tonga (horse cart) at 10km /h. After a certain distance Salman got off and travelled the rest distance by another Tonga at 10 km/h, while Priyanka went back for Akshay and reached the destination at the same time that Salman arrived. The number of hours required for the trip was:
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 29
A man can cross a downstream river by steamer in 40 minutes and same by boat in 1 hour. If the time of crossing the river in upstream direction by steamer is 50% more than downstream time by the steamer and the time required by boat to cross the same river by boat in upstream is 50% more than the time required in downstream by boat. What is the time taken for the man to cross the river downstream by steamer and then return to same place by hoat half the way and by steamer the rest of the way?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 32
Mahindra starts a journey for his office, which is in the north east of his home. An hour after starting meets with a minor accident. He takes one hour in resuming his journey. After that he proceeds at 5/6 th of his former speed and arrives at the office 1 hour 36 minutes late than the scheduled time. Had the accident occurred 80kms further from the actual place of accident, he would have arrived 1 hour 20 minutes beyond the scheduled time. What is the distance between his office and his home?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 33
A soldier fired two bullets at an interval of 335 seconds moving at a uniform speed v1 terrorist who was running ahead of the soldier in the same direction, hears the two shots at an interval of 330 seconds? If the speed of sound is 1188 km/h, then who is the faster and by how much ?