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a train met with accident 120 km from station A. it completed the remaining journey at 5/6 of its previous speed and reached 2 hours late at station B. had the accident take place 300 km further , it would have been only 1 hour late, what is the speed of the train

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Rahul sells a machine for Rs 50 lakhs at a loss. Had he sold it for Rs 60 lakh, his gain would have been 7 times the earlier loss. What is the cost price of the
machine

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A cylindrical vessel of radius 7 cm is partially filled with water. By how much will the water level rise if a sphere of radius 6 cm is completely immersed in
this water?

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97:63::67:?

is there any shortcut procedure for determining the number of integers in inequalities.