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A car travels 6.0 km along a main road in 6.0 minutes. It then travels 2.0 km along a minor road in 6.0 minutes. Which calculation of average speed for the whole journey is correct?

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Solution

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Total distance traveled is 8+2 km

Total time taken is 6+6 min

Average speed is =812=23=0.67 km/min

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