Karen's age this year is a multiple of 9. Five years ago her age was a multiple of 8. Determine Karen's age today.
+36915 K = 9x and 9x-5 is a multiple of 8
9x-5 multiple of 8
9-5 no
18-5
27-5
36-5 no but getting close
45-5 = 40 yes! x = 5 9x = 45 9x-5 = 40
She could also be 117 but unlikely ! 
