Mathematics · Speed, Time and Distance
A car covers 600 km. The times taken by it in covering the first 150 km, second 150 km, third 150 km and fourth 150 km are in the ratio of 3 : 4 : 5 : 3. If its slowest speed is 30 km per hour, then its average speed for the whole journey is _____ km per hour.
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Correct answer
40
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