A car covers a distance of 40 km at a constant speed if the speed had been 12 kilometre per hour more the time taken for journey would have been 1 hour 40 minutes less find the original speed of car
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car covers a distance of 40 km at a constant speed if the speed had been 12 kilometre per hour more the time taken for journey would have been 1 hour 40 minutes less find the original speed of car
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