The harmonic mean of speeds 30 km/h and 60 km/h for equal distances is:

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Team JKSSB Mock Tests · Accepted Answer

For equal distances, average speed = harmonic mean = 2 / (1/30 + 1/60) = 2 / (2/60 + 1/60) = 2 / (3/60) = 2 × 20 = 40 km/h. Arithmetic mean (45) would be incorrect here.

The harmonic mean of speeds 30 km/h and 60 km/h for equal distances is: MCQ with Answer and Explanation

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