Maria ran 4 laps of the track at the same pace. If it took 4 1/2 minutes to run the first 3 laps how long did it take her to run all 4 laps

(4.5/3) * 4 = 6

That is, the time per lap times the # of laps

3:45

To find out how long it took Maria to run all 4 laps, we can start by finding the time it took her to run each lap and then add them up.

Given that it took her 4 1/2 minutes to run the first 3 laps, we can divide this total time by the number of laps to find the time taken per lap.

4 1/2 minutes can also be written as 4 + 1/2 minutes.

Since there are 3 laps, the time taken per lap would be (4 + 1/2) minutes divided by 3.

(4 + 1/2) minutes divided by 3 equals [(8/2) + 1/2] minutes divided by 3.

This simplifies to (9/2) minutes divided by 3.

To divide by 3, we can multiply by the reciprocal of 3, which is 1/3.

Therefore, the time taken per lap is (9/2) minutes multiplied by 1/3, which equals (9/2) * (1/3) minutes.

Multiplying the numerators (9 * 1) and the denominators (2 * 3), we get 9/6 minutes.

Simplifying 9/6 minutes, it reduces to 3/2 minutes or 1 1/2 minutes.

Since it took Maria 1 1/2 minutes to run each lap, we can add this to the time it took her to run the first 3 laps to find the total time for all 4 laps.

Adding 1 1/2 minutes to 4 1/2 minutes, we get (4 1/2) + (1 1/2) minutes.

This simplifies to 6 minutes.

Therefore, it took Maria 6 minutes to run all 4 laps.