Answer: 4 laps
Explanation:
To find this we need to divide the total length needed to run by the length of a single lap.
If you prefer, you can also divide by fractions by turning 2.4 into 12/5 and .6 into 3/5. You could then divide 12 by 3 to get 4 or keep the fractions:
Hope this helped you. If you need anything explained let me know.