Practice Test Discussion

Q)

A person covers a certain distance by car at a speed of 25 km/hr and comes back at speed distance at a speed of 40 km/hr. What is his average speed during his travel?

    • Explanation

    Given,

    A=25 km/hr, B=40 km/hr

    We know the formula,

    Average speed= 2ABA+B

    ∴ Required average speed

    =2×25×4025+40=200065

    = 30.76 km/hr

    Hence, Option A is correct.

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