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A car driver decided to drive his car at a speed of 60km/hr in the hope of covering a distance of 30km in 30 minutes. But half way through he found that his speed was only 30 km/hour. What should be his speed in the second half of his journey if he h ?->(Show Answer!)
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1. A car driver decided to drive his car at a speed of 60km/hr in the hope of covering a distance of 30km in 30 minutes. But half way through he found that his speed was only 30 km/hour. What should be his speed in the second half of his journey if he has to complete his journey at an average speed of 60km/hour?





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