Question

A car travels 40 km in 30 minutes and the next 40 km in 40 min. Calculate
the average speed for the entire journey.​

Answer 1

$avg. \: speed = \frac{total \: distance \: covered}{total \: time \: taken} \\ = \frac{40km + 40km}{30min + 40min} \\ = \frac{80km}{70min} \\ = \frac{80}{70} \times \frac{1000}{60} \\ = \frac{400m}{21s} \\ = 19.047 \: m/s$

Answer 2

Answer:

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