Gabrielle can run at a constant speed of 58.2 seconds per 400 meters. At this rate, how long will it take her to run 900 meters?
Use a proportion.
58.2 / 400 = x / 900
Cross multiply and solve for x.
To determine how long it will take Gabrielle to run 900 meters, you need to use the concept of ratios.
First, set up a proportion using the given information about Gabrielle's running speed:
58.2 seconds / 400 meters = x seconds / 900 meters
Next, cross-multiply and solve for x:
58.2 * 900 = 400 * x
52,380 = 400x
Divide both sides by 400:
x = 52,380 / 400
Simplifying the right side:
x = 130.95 seconds
Therefore, it will take Gabrielle approximately 130.95 seconds to run 900 meters at her constant speed of 58.2 seconds per 400 meters.