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A rider finishes a 120 km bicycle trip in 3 hours. The average speed of the rider is_____.

A.)4 km/h
B.)3.6 km/h
C.)360 km/h
D.)40 km/h

Respuesta :

Answer:

The "average speed" of the rider is 40 km/h.

Explanation:

The average speed of a rider finishes by bicycle is the total distance traveled by bicycle divided by the time to cover that distance.

[tex]\text { Average speed }=\frac{\text { total distance }}{\text { total time }}[/tex]

[tex]\Delta \mathrm{s}=\frac{\Delta \mathrm{d}}{\Delta \mathrm{t}}[/tex]

∆s =Average speed

∆d = total distance

∆t = total time

Total distance of the rider finishes by bicycle = 120 km

Total time of the rider's bicycle = 3 hours

[tex]\text { Average speed }=\frac{120}{3}[/tex]

Average speed = 40 km/h

The "average speed" of the rider is 40 km/h .

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