Question

Eric has an exterminator visit regularly to control an ongoing cockroach problem. It's been

working, and the population has declined by 15% every year. If the population is currently
2,700 cockroaches, how many will there be in 4 years?

Answer 1

1080

Explanation:

15% of 2700 is 405

405×4= 1620

2700-1620=1080