A car covers 20 km in first hour of its journey, 40 km in next hour and 30 km in third hour. Calculate its average speed.

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Solution

Average speed = $\frac{Total distance covered}{Total time taken} = \frac{20 km + 30 km + 40 km}{3 h} = \frac{90 km}{3 h} = 30 km / h$

The average speed of the car is 30 km/h.

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A car covers 20 km in first hour of its journey, 40 km in next hour and 30 km in third hour. Calculate its average speed.

Average speed = Total distance coveredTotal time taken = 20 km+30 km+40 km 3 h = 90 km3 h = 30 km/h The average speed of the car is 30 km/h.

Average speed = $\frac{Total distance covered}{Total time taken} = \frac{20 km + 30 km + 40 km}{3 h} = \frac{90 km}{3 h} = 30 km / h$

The average speed of the car is 30 km/h.