To find the constant of proportionality for both Jimmy and Carlo, we need to determine how many pages each of them reads per minute.
Jimmy's Calculation:
- Pages read: 15 pages
- Time taken: 5 minutes
We calculate the rate at which Jimmy reads: \[ \text{Constant of proportionality (Jimmy)} = \frac{\text{Pages read}}{\text{Time taken}} = \frac{15 \text{ pages}}{5 \text{ minutes}} = 3 \text{ pages per minute} \]
Carlo's Calculation:
- Pages read: 12 pages
- Time taken: 6 minutes
Now we calculate the rate at which Carlo reads: \[ \text{Constant of proportionality (Carlo)} = \frac{\text{Pages read}}{\text{Time taken}} = \frac{12 \text{ pages}}{6 \text{ minutes}} = 2 \text{ pages per minute} \]
Comparison:
- Jimmy reads at a rate of 3 pages per minute.
- Carlo reads at a rate of 2 pages per minute.
Sentence to Compare:
Jimmy reads faster than Carlo because he reads 3 pages each minute while Carlo only reads 2 pages per minute.