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Maths Aptitude Test
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You travel out at an average speed of U. You return at an average speed of V. What is your overall average speed?
AnswerClick to flip back
A
2UV/(U + V)
💡 Explanation:
Average speed for a round trip is the total distance divided by total time. If distance is D, time is D/U + D/V. Average speed = 2D / (D/U + D/V) = 2UV / (U + V).