Answer:
a) 41.38%
b) 29.26%
c) 70.73%
Step-by-step explanation:
We should check agsint whom is the comparrison to deteminate the base.
If we compare "than Portland's" this means portland is the year base.
a) Seattle / Portland
410,000 / 290,000 - 1 = 41.3793 = 41.38%
b) 1 - Portland / Seattle = 1 - 290,000/410,000 = 29.26%
c) Portland / Seattle = 290,000 / 410,000 = 70.7317%