Practice Test Discussion

Q)

A truck goes from haryana to banglore with an average speed of 60 km/hr. The journey takes 30 hours. It returns from banglore to haryana on the same road with an average speed of 40 km/hr. What was the average speed of the truck during the round trip?

    • Explanation

    According to the question

    We now the formula,

    Distance= speed×time

        =60×30 =1800 km/hr

    Time =distancespeed=180040=45 hrs

    Average speed =Total distanceTotal time 

    =1800+180030+45=360075

    Average= 48 km/hr

    Hence,, Option B is correct.

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