Is such that Seb pays a 15% flat rate of income tax on his salary. The tax system is due for reform, and politicians have suggested the following:
1. Any income under $12,000 should be tax free.
2. Anything above $12,000 should be taxed at 25%.
Given that Seb will be paying $1,500 more under the new system, calculate how much tax Seb pays under the current system. You can assume that X>$12,000.