To find the constant of proportionality for each reader, we will calculate the reading rate (pages per minute) for both Jimmy and Carlo.
1. Calculate Jimmy's reading rate:
Jimmy reads 15 pages in 5 minutes. The constant of proportionality \( k_J \) for Jimmy can be calculated as follows:
\[ k_J = \frac{\text{pages}}{\text{minutes}} = \frac{15 \text{ pages}}{5 \text{ minutes}} = 3 \text{ pages/minute} \]
2. Calculate Carlo's reading rate:
Carlo reads 12 pages in 6 minutes. The constant of proportionality \( k_C \) for Carlo can be calculated as follows:
\[ k_C = \frac{\text{pages}}{\text{minutes}} = \frac{12 \text{ pages}}{6 \text{ minutes}} = 2 \text{ pages/minute} \]
Summary of work:
- Jimmy's constant of proportionality: \( k_J = 3 \text{ pages/minute} \)
- Carlo's constant of proportionality: \( k_C = 2 \text{ pages/minute} \)
Comparison sentence: Jimmy reads faster than Carlo, with a reading rate of 3 pages per minute compared to Carlo's rate of 2 pages per minute.