Question 123873
Let Marysville by m and Springfield be s.

m+s = 25000  -------eqn 1
0.1m+0.09s = 2380  ----------eqn 2
From eqn 1: m = 25000-s  ---------eqn 3

Sub eqn 3 into eqn 2:
(0.1)(25000-s)+0.09s = 2380
2500-0.01s = 2380
0.01s = 120
s = 12000
Sub s=12000 back into eqn 3:
m=13000