# Western State College is 18 years older than Southern State. Western is also 2 1/2 times as old as Southern. How old is each?

##### 1 Answer

Mar 5, 2018

western =

#### Explanation:

use the variable

use the variable

we need to write 2 equation because we have 2 variables

we know that western state is 18 years older than southern state

western state is 2.5 times as old as southern

solve the system of equations

because

solve for

plug in 12 for