Question

In may 1954,Roger bannister became the first person to run a mile in less than four minutes.he ran the four LaPs of the race in 57.5,60.7,62.3,58.9 seconds.what was his total time?by how much did he break the four minute barrier.

Answer 1

Final Answer:

The total time that is taken by Roger to complete the four laps is 239.4 seconds.

The time by how much he broke the four-minute barrier is 0.15 seconds.

Given:

In May 1954, Roger Bannister became the first person to run a mile in less than four minutes.

He ran the four laps of the race in 57.5, 60.7, 62.3, 58.9 seconds.

To Find:

The total time that is taken by Roger to complete the four laps is to be found out.

The time by how much he broke the four-minute barrier.

Explanation:

The total time is obtained from the sum total of all the time periods taken for all the laps.

The average time for each lap is obtained by dividing the total time period by the number of laps.

Step 1 of 3

The total time in seconds, that is taken by Roger to complete the four laps is

$=57.5+60.7+62.3+58.9\\=239.4$

Step 2 of 3

The average time in seconds, that is taken by Roger to complete a lap is

$=\frac{239.4}{4}\\ =59.85$

Step 3 of 3

The time in seconds, by how much he broke the four-minute barrier is

$=60-59.85\\=0.15$

The required total time that is taken by Roger to complete the four laps is 239.4 seconds.

The required time by how much he broke the four-minute barrier is 0.15 seconds.

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