Write a proportion= . Use the given info: = 30000; = 4500; = 30000 + 2000 = 32000. Substitute it into the proportion = . From the proportion, find = = 4800 dollars. The increase in tax is - = 4800 - 4500 = 300 dollars. ANSWER
15T = 16(4,500) ---- Cross-multiplying Tax on $32,000, or So, excess tax to be paid = $4,800 - $4,500 = $300