Question

the table shows the distances and times that four runners trained. which runner was the fastest?

	data for four runners
runner a	100 meters	18 seconds
runner b	100 meters	16 seconds
runner c	100 meters	20 seconds
runner d	100 meters	17 seconds

Explanation:

Step1: Calculate speed for each roadblock

Speed = Distance/Time.
For Roadblock A: Speed = $\frac{100}{40}= 2.5$ gardens per second.
For Roadblock B: Speed = $\frac{120}{50}= 2.4$ gardens per second.
For Roadblock C: Speed = $\frac{105}{35}= 3$ gardens per second.
For Roadblock D: Speed = $\frac{150}{50}= 3$ gardens per second.

Step2: Compare speeds

We want to find the slowest. Roadblock B has the lowest speed among them.

Answer:

Roadblock B