Question
A car travels 120 km at a speed of 40 km/h and returns
at a speed of 60 km/h. Find the average speed of the car for the whole journey.Solution
Average speed = (2 * speed1 * speed2) / (speed1 + speed2). Substituting the given values, Average speed = (2 * 40 * 60) / (40 + 60) = 48 km/h. Correct answer: a) 48 km/h
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