Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A boy walks to his school at a distance of 6 km with constant speed of 2.5 km / hour and walks back with a constant speed of 4 km/hr . His average speed for round trip expressed in km / hour , is
Text Solution
Verified by ExpertsThe correct answer is:
B
Distance average speed \(= \frac{2 v_1 v_2}{v_1 + v_2}\) \(-\frac{2 / 2.5 \times 4}{2.5 + 4}\)
\(-\frac{200}{65} - \frac{40}{13} \, km/hr\)
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