Question

Sarah rode her bike 53 km in 4 hours.

What was her average speed per hour?

A. 5.3 km/h

B. 12.5 km/h

C. 13.25 km/h

D. 21.2 km/h

Answer 1

the answer really is 13.25 because you going to divide it

Answer 2

The average speed of Sarah is 13.25 km/hour.

Speed, distance, and Time

We know that sped, distance, and time all are in a relationship to each other. this relationship can be given as,    

$\rm{Speed = \dfrac{Distance}{Time}$

Given to us,

• Distance traveled by Sarah = 53 km,
• Time needed by Sarah = 4 hours,

Speed of Sarah

$\rm{Speed\ of\ Sarah=\dfrac{Distance\ traveled\ by\ Sarah}{Time\ needed\ by\ Sarah}$

$\rm{Speed\ of\ Sarah=\dfrac{53\ Km}{4\ hours}$

$\rm{Speed\ of\ Sarah=13.25\ km/hour$

Hence, the average speed of Sarah is 13.25 km/hour.

Learn more about Time, speed and distance:

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