21. A man performs 1/2 of the total journey by rail, 1/3 by bus and the remaining 4km on foot. His total journey is |
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22. A motor car starts with the speed of 70km/hr with its speed increasing every two hours by 10kmph. In how many hours will it cover 345 kms |
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23. A train starts with the speed of 50km/hr with its speed increasing every two hours by 20kmph. In how many hours will it cover 330 kms |
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24. A and B walk around a circular track. They start at 8 a.m from the same point in the opposite directions. A and B walk at a speed of 2 rounds per hour and 3 rounds per hour respectively. How many times shall they cross each other before 9 a.m |
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25. A and B walk around a circular track. They start at 1 p.m from the same point in the opposite directions. A and B walk at a speed of 4 rounds per hour and 6 rounds per hour respectively. How many times shall they cross each other before 4 p.m |
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26. A train covers a distance of 12 km in 10 minutes. If it takes 6 seconds to pass a telegraph post, then the length of the train is |
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27. A train is running at a speed of 40 km/hr and it crosses a post in 18 seconds. What is the length of the train? |
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28. A train ,130 meters long travels at a speed of 45 km/hr crosses a bridge in 30 seconds. The length of the bridge is |
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29. A train has a length of 150 meters . it is passing a man who is moving at 2 km/hr in the same direction of the train, in 3 seconds. Find out the speed of the train. |
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30. A train having a length of 240 m passes a post in 24 seconds. How long will it take to pass a platform having a length of 650 m? |
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