Answer:
8 laps
Explanation:
We know that Mike walked 12 laps.
We also know that Juan walked 2/3 of 12 laps, meaning Juan walked less laps than Mike, as 2/3 is less than 1.
To solve, we can multiply 2/3 by 12 to find out how many laps Juan walked:

=8
So, Juan walked 8 laps.
Hope this helps! :)