Randy paid $287.50 in taxes to the school district that he lives in this year.This year's taxes were a 15% increase from last year.How much did Randy pay in taxes last year?
Let x represent last year's taxes.
Since the taxes went up by 15%, the increase in taxes was 15% of x or 0.15·x
This year's taxes is last year's taxes plus the increase: x + 0.15x which is 1.15x.
So: 1.15x = 287.50
Divide by 1.15 ---> x = $250.00
+153 
