property tax rate last year = 2%
property tax rate this year = 2.4%
property tax this year = 3,240
Last year:
3280 / 164000 = 0.02 * 100 % = 2% last year's tax rate
This year:
last year's tax rate increase by 20%
2% * 20% = 0.02 * 0.2 = 0.004 - the 20% increase
0.004 + 0.02 = 0.024 * 100% = 2.4% tax rate this year.
135000 * 2.4% = 3,240 property tax this year.