Practice Test Discussion

Q)

A car travels a certain distance from town A to town B at the speed of 42 km/hr and from town B to town A at a speed of 48 km/hr. What is the average speed of the car?


  • Explanation

    According to the question

    We know the formula,

    Average speed=2ABA+B km/hr

    ∴ Average speed iof the car=2×42×4842+48=403290

    = 44.8 km/hr

    Hence, Option B is correct.

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