Question

Tristan is training for the hundred meter Dash his first run was 11.75 seconds and his second run was 11 seconds. What was the present decrease in his time

Answer 1

The percentage decrease in Tristan's time for the hundred meter dash from his first run to his second run was approximately 6.38%.

Step-by-step explanation:

Tristan's performance in the hundred meter dash improved from his first run to his second run, with times of 11.75 seconds and 11 seconds respectively. To calculate the percentage decrease in his time, we use the formula:

Percentage Decrease = ((Old Time - New Time) / Old Time) × 100%

Substituting the given values:

Percentage Decrease = ((11.75 - 11) / 11.75) × 100%

Percentage Decrease = (0.75 / 11.75) × 100%

Percentage Decrease = 0.0638 × 100%

Percentage Decrease = 6.38%

There was approximately a 6.38% decrease in Tristan's time from his first run to his second run.

Answer 2

The present decrease in Tristan's time is 0.75 seconds.

The present decrease in Tristan's time can be calculated by finding the difference between his first run time and his second run time.

First run time: 11.75 seconds

Second run time: 11 seconds

Present decrease in time = First run time - Second run time = 11.75 seconds - 11 seconds = 0.75 seconds