To find out how many days it will take Juan to practice 72 minutes, we need to divide the total practice time by the daily practice time.
Juan practices for 24 minutes each day. We can set up the equation:
\[ \text{Number of days} = \frac{\text{Total practice time}}{\text{Daily practice time}} = \frac{72 \text{ minutes}}{24 \text{ minutes/day}} = 3 \text{ days} \]
So, it will take Juan 3 days to practice for a total of 72 minutes.