Question

A car travel 20km in first hour, 40km in second hour, 30km in third hour. Calculate the average speed of the car

Answer 1

Average speed of car = 20km+40km+30km/3hrs

=90km/3hrs

=30km/h

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Answer 2

$=> S_{avg} = \dfrac{Total Distance}{Total Time}$

$=> S_{avg} = \dfrac{20+40+30}{1+1+1}$

$=> S_{avg} = \dfrac{90}{3}$

$=> S_{avg} = 30 Km{h}^{-1}$

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