Question
Average speed of βAβ during a 30-hour journey is 34
km/h. If he covered the first 180 km of his journey at a speed of 20 km/h, then find the speed at which βAβ travelled during the remaining journey.Solution
Total distance covered by βAβ = 30 Γ 34 = 1020 km Time taken to cover 180 km = 180/20 = 9 hours Time taken to cover remaining distance = 30 β 9 = 21 hours So, required speed = {(1020 β 180)/21} = 40 km/h
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