# math

posted by
**SRay** on
.

In the summer of 2008 the population of cuckoos in an area was estimated as 560 pairs. If the numbers returning are declining at 4% each year, calculate

(a) the number of pairs of cuckoos in the area in the summer of 2009;

(b) the number of pairs of cuckoos in the area in the summer of 2020.