Answer:
The probability of selecting two Democrats and three Republicans is 10.7%.
Explanation:
Given that a city council consists of seven Democrats and eight Republicans, if a committee of five people is selected, to find the probability of selecting two Democrats and three Republicans the following calculation must be performed: 
 
7 = 100 
2 = X 
2 x 100/7 = X 
28.57 = X 
 
8 = 100 
3 = X 
3 x 100/8 = X 
37.5 = X 
 
0.2857 x 0.375 = X 
0.107 = X 
 
0.107 x 100 = 10.7 
 
Therefore, the probability of selecting two Democrats and three Republicans is 10.7%.