Answer:
The population will be 700.
Step-by-step explanation:
1) 500 - 100 = 400 Rabbits more rabbits were added into the area
2) 1 year = 400 rabbits
3) 1/2 year = 6 months
4) So, 400 / 2 = 200
5) so, new population would be 500 + 200 = 700 rabbits
