A car can travels 450 km in 4 hours.

If the speed is decreased by 15 1/2 kmph, how much time does the car take to cover a distance of 873 km?

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A car can travels 450 km in 4 hours.

If the speed is decreased by 15 1/2 kmph, how much time does the car take to cover a distance of 873 km?

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