In a race of 1000 m. A beats B by 100 m or 10 seconds. If they start a race of 1000 m simultaneously from the same point and if B gets injured after running 70 m more than half the race length and due to which his speed gets halved, then by how much time will A beat B?
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Step-by-step explanation:
A take 30 m to beat B in this. race
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