Final answer:
Marty's estimate of 300 people living in each community in Kalb Country is reasonable.
Step-by-step explanation:
To determine if Marty's estimate of 300 people living in each community in Kalb Country is reasonable, we can divide the total population of Kalb Country by the number of communities. If the quotient is close to 300, then Marty's estimate is reasonable.
Let's assume the total population of Kalb Country is 15,000 (50 communities * 300 people). Dividing 15,000 by 50 gives us 300, which is equal to Marty's estimate. Therefore, his estimate is reasonable.