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A car travels from P to Q at a constant speed If its speed were increased by 10 km / hr, would have taken one hour lesser to cover the distance. It would have taken further 45 minutes lesser if the speed was further increased by 10 km/hr. What is the distance between the 0841 cities? `420\ k m` b. `\ 540\ k m` c. `650\ k m` d. `600\ k m`

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RS AGGARWAL-TIME AND DISTANCE-All Questions
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